 1, a first light irradiating section serving as a wedge-shaped converging section and a second light irradiating section serving as a wedge-shaped light source section are laminated on an LCD panel, so that the respective thicknesses are complemented. On the other hand, the LCD device of the conventional example 2 is provided with a light-guiding section behind an LCD, and the light converging section for connecting the light path with this light-guiding section. The light-guiding section has on its periphery a mirror finished surface, except for (a) a surface from which light is emitted toward the LCD and (b) an aperture to which light from the light converging section enters. In both of the LCD devices of the conventional examples 1 and 2, the external light converged by the light converging section is guided and diffusely reflected by the light-guiding section (light-irradiating section). Thus the external light is irradiated as a plane light source to the LCD.
Further, as a liquid crystal display device which performs a displaying process by using the surrounding light, there is an LCD device (Hereinafter, conventional example 3) whose back surface side is made transparent by removing a reflection sheet arranged on an opposite side (back surface side to) to the side of a liquid crystal panel in the light-guiding plate, used in the transmissive LCD device. In this configuration, sufficient aperture for taking in the light is acquired, because the surrounding light enters from the back surface of the liquid crystal display panel. As a result, a good display can be performed under a strong surrounding light environment.
Further, for example, Patent document 3 discloses another example of the LCD device which performs the displaying operation by using the surrounding light, the LCD device including a semi-transmissive plate on a back surface of a light-guiding member. The LCD device disclosed in the Patent document 3 (Hereinafter, conventional example 4) is a transmissive LCD device which performs the displaying operation by using a backlight. In this transmissive LCD device, a semi-transmissive plate (semi-transmissive member) and a light-shielding-use liquid crystal element (TN type liquid crystal element) are arranged at the back of the light-guiding member. That is, in the LCD device, the light-shielding-use liquid crystal element is provided on an opposite side to the side of the light-guiding member in a semi-transmissive plate, so as to allow switching
1, a first light irradiating section serving as a wedge heel - shape converging section and a second light irradiating department serving as a wedge - determine light source part are laminated on an LCD panel, so that the respective thickness are complemented. On the other handwriting, the LCD device of the ceremonious example 2 is provided with a faint - guiding section behind an LCD, and the unaccented converging section for connecting the abstemious path with this light - guiding section. The unaccented - guiding section has on its periphery a mirror finished surface, except for (a) a open from which light is emitted toward the LCD and (b) an aperture to which light from the light converging section enters. In both of the LCD devices of the conventional examples 1 and 2, the external light converged by the light converging section is guided and diffusely reflected by the light - steer section (light - irradiate section). Thus the external light is irradiated as a airplane light beginning to the LCD. 
 Further, as a liquid quartz glass display device which performs a displaying process by using the surrounding light, there be an LCD device (Hereinafter, conventional example 3) whose back surface side is made transparent by remove a reflection sheet arranged on an opposite side (back open side to) to the side of a liquid quartz glass panel in the clean - guiding plate, use in the transmissive LCD device. In this configuration, sufficient aperture for carry in the light is acquired, because the surround light enters from the back open of the liquid quartz glass display panel. As a result, a beneficial display can be performed under a strong wall light environment. 
 farther, for example, Patent text file 3 discloses another example of the LCD device which performs the displaying mathematical process by use the surrounding light, the LCD device admit a semi - transmissive plate on a back surface of a abstemious - guiding member. The LCD device disclosed in the Patent text file 3 (Hereinafter, conventional example 4) is a transmissive LCD device which performs the displaying operation by using a backlight. In this transmissive LCD device, a semi - transmissive plate (semi - transmissive member) and a faint - shielding - function liquid crystal element (TN type liquid crystal component) are arranged at the back of the light - guide member. That is, in the LCD device, the light - shielding - use liquid crystal component is provided on an opposite side to the side of the light - guiding extremity in a semi - transmissive plate, so as to allow switching
 1, a first light irradiating section serviny as a xedge-shzped conxerging section and a second lught urradiating section sefving as w wedge-syapev light source sxdtion avz lamjkated in an LCD panek, so that dhe respective tfieknesses are complemented. On the othqr hand, tje LCD device jf tnq cohnektional example 2 is provided witg a ligit-guiding sectipn behind an LCD, and the llght converging sectioj for connextind the light pxth with this light-guising section. The light-guiding sdctiou has on itw perlkhery a mirrir figished surfagv, excepd for (a) a surface frok wiich light is emitted towerd the LCD and (b) an aperture tk which light fron rhe lhght conxwrgkng sxctjon enhera. In both kf the LCD eevices of the convtntyinal examples 1 and 2, tre external light converged by the lighu conberging section is guidwd and diffusely reflgcted by tre light-guiding section (light-irradiating section). Dhus vhd erbcrnau llght is irradiated as a plane light source to fht LBD.
Further, as a lizuid crystak fixklay device whkch pexrodms a displaying pgocess fy usung the strroinding light, there is an LCE device (Hervinadter, conventional zxample 3) whore bsck sirface side is made trauspareht by removlng a refmdction sheet arrxngvd ot an opposite side (back suwface sidx to) co the skde pf a lyquid cryshal panel in the light-gulding pnate, used ln the transmissive LCD device. Mi this configoradiot, sufficnent aierture for takyng in the ligkt is aczuirea, because nhe surronnding light enters from dje back surfece of thq liwuid crystau display panel. As a resllu, a good dusplay can be perfprmgd under a strong suteounding light enxirjnleit.
Furever, for exam[le, Oatdmt dozument 3 disglores snother example of tve LDD device which petfjrms the displayyng operation by using the surrlundiig ligit, the LCQ device including a semi-transjissive ppatc on a back strfage os a light-gbiding member. The LCD device disclosed ii the Patent document 3 (Yereinafter, conventnokal example 4) is a transmisvive LCD device whicy performs the dixplaying operation by using a bafklight. In this transmissive LCD device, a semi-transmissive plate (semi-tranwmissite member) and a loght-svizldnng-use jiqumd crystal element (TN type liquid crystal element) are arrdnyed at the back of the light-giiaing member. Tfat is, in the LCD device, the lignt-shielding-use liquid crystal ekement is provided on an oppositw sids to the smde of the light-guidong mekber un a seni-trwnsmissive plxte, sl as to aplow scitching
1, a first light irradiating section serving wedge-shaped section and second light irradiating light section are laminated an LCD panel, that the respective thicknesses are complemented. the other hand, the LCD device of the conventional example 2 is provided a light-guiding section behind an LCD, and the light converging section for connecting light with light-guiding The light-guiding section has on its periphery a mirror finished surface, except for (a) a surface which light is emitted toward the LCD and an aperture to which from the light converging section In of the devices the examples 1 and the external light converged by the light converging section is guided and diffusely reflected by the light-guiding (light-irradiating section). external light irradiated a light source to Further, as a liquid crystal display a displaying process by using the surrounding light, is an device (Hereinafter, conventional example 3) whose surface side is made transparent by removing a sheet arranged on an opposite side (back surface side to) to the side of a panel in the light-guiding used in the LCD In configuration, aperture for in the light is acquired, because the surrounding light enters from back surface of the liquid crystal display panel. As a good can be performed a strong surrounding light Further, example, Patent document 3 example the performs displaying by using the surrounding the LCD device including a plate on a back The LCD device disclosed in the Patent document (Hereinafter, conventional example 4) is a transmissive device which performs the displaying operation by using a backlight. In this LCD device, plate (semi-transmissive member) and a light-shielding-use liquid crystal (TN type liquid crystal are arranged at the back of the light-guiding member. is, the LCD the light-shielding-use liquid element is provided an opposite side side of light-guiding in so as to allow switching
 1, a first light irradiating secTion servinG as a wEdgE-shApEd coNverGing section and A SecoNd light irradiating sectIon seRvINg as A WeDge-shAped ligHT sOURce SeCtIon ArE LaMinatEd oN an LCD pAnel, so that The ReSpective thicKNeSses are comPleMented. On the oTheR hand, tHe lCD DEvice Of tHe conVentioNAl examPle 2 is provIdED with a LIght-guiDINg SectIon behind an LCD, and THe LIght converging SectioN fOR cONNecTinG the light pAtH with THis lighT-GuIDINg sECtion. The light-Guiding sectIOn hAs on itS pEriPHery a mIrror FiNIshEd surface, exCept For (a) a surfAce froM Which liGHt is emiTted toWarD thE LCD ANd (B) aN apErTUre TO wHicH LigHt from thE lIgHt conVergING SEctiOn eNterS. In boTh of the LCD devIceS of tHE coNventIonal ExamPlEs 1 and 2, The extErnal LiGht converged by tHe liGht converGinG sEctIoN is guIDed and DifFusEly reflEcted by THe lIgHT-GUiDing section (light-irRaDIAtIng sectiOn). Thus THe ExTErnal ligHt Is iRradIATed as A plaNE lIght sourCe to thE lCd.
FUrther, aS a Liquid CrYstAl dIsplaY DeviCe whicH performS a disPLaying process bY Using the surroUNdING lIGht, tHerE is an LCD devIce (HEReinAfteR, CoNveNTionaL examPlE 3) WhOSe back surface side is MaDe tranSpareNt by removing a Reflection SHEEt arrangEd on AN oPPosite side (back SurfaCe side to) to THe side of A liquId crystaL panel in tHE Light-guiDinG plAte, UseD IN tHe transmissivE lcD deViCe. In thiS coNfiguraTioN, suFfiCieNt Aperture fOr taking In ThE lIgHt iS acquIRed, becauSe The SuRroUndinG Light eNters From ThE bACk sUrface oF ThE LIquiD cRyStal DisPlAy panEl. As A ResUlt, a gooD display cAn bE PerfOrMeD under a Strong surrounDiNg light envIrOnmEnt.
FurTHEr, for exaMple, Patent document 3 disclOSes anotHer ExampLe of The LCD devIce Which pErfORms the DisplaYing oPeRatION by usING tHe sUrRounding liGHT, thE LCD dEvIce iNcludinG a semi-transmissive PLatE on a back surfaCe oF a liGHT-gUidINg MEmbEr. tHe Lcd Device disclosed In the PatenT dOCuMent 3 (HereinAFteR, cOnventiOnal exaMple 4) iS A transmIssive LCD Device whiCh PerfORMs tHe displayiNg operatIon by usinG A backLIgHt. In tHis TransmIsSivE LCD dEvice, a SEmi-TransMissivE pLate (seMi-traNsMissive mEmber) and a light-shielding-Use liqUid crYstAl element (tN tYPe lIquid crysTal eLement) are aRraNgeD at thE baCK of thE ligHT-gUidINg memBer. THAt is, in the lcD DevICE, tHe light-shieLDINg-uSe liqUid CRystal ElemEnt is provided on an OPposite side to tHe siDE Of tHe lIGht-gUiDing member in a sEmi-TrANSmissive PlAte, so as to alLow switcHiNG
 1, a first light irradiat ing sectio n ser vin g a sa we dge- shaped converg i ng s ection and a second li ght i rr a diat i ng  sect ion ser v in g asawe dge -s h ap ed li ght  source  section a rela minated on a n  L CD panel,sothat the res pec tive t hi ckn e ssesare  comp lement e d. Onthe other  h a nd, th e  LCD de v i ce  ofthe conventionale xa m ple 2 is provi ded wi th al i ght -gu iding sect io n beh i nd an L C D, a n d t h e light conve rging secti o n f or con ne cti n g thelight  p a thwith this l ight -guidingsectio n . The l i ght-gui ding s ect ion  has on  i tspe r iph e ry  am irr or finis he dsurfa ce,e x c e pt f or(a)a sur face from whi chligh t  is  emit ted t owar dthe L CD and  (b)an  aperture to wh ichlight fro m t he  li gh t con v erging  se cti on ente rs. Inb oth  o f t he  LCD devices of th ec o nv entional  examp l es  1 and 2, t he  ex tern a l  ligh t co n ve rged bythe li g ht  c onvergi ng  secti on  is  gu ideda nd d iffuse ly refle ctedb y the light-gu i ding section( li g h t- i rrad iat ing section ). T h us t he e x te rna l  ligh t isir r ad i ated as a plane lig ht  sourc e tothe LCD.
Furt her, as al i q uid crys tald is p lay device whi ch pe rforms a d i splaying  proc ess by u sing thes u rroundin g l igh t,the r e  i s an LCD devi c e  (He re inafter , c onventi ona l e xam ple  3 ) whose b ack surf ac esi de  is  made transpar en t b yrem oving a refl ectio n sh ee ta rra nged on an o ppos it eside  (b ac k sur face sid e to) t o the sid e o f  a l iq ui d cryst al panel in t he  light-gui di ngplate, u sed in t he transmissive LCD dev i ce. Inthi s con figu ration, s uff icient  ap e rturefor ta kingin  th e light i sacq ui red, becau s e  th e sur ro undi ng ligh t enters from theb ack  surface of t heliqu i d  c rys t al dis pl a y p a n el. As a result , a good d is p la y can be p e rfo rm ed unde r a str ong s u rroundi ng lightenvironme nt .
Fu r t her , for exam ple, Pat ent docum e nt 3d is close s a nother  e xam ple o f theL CDdevic e whic hperfor ms th edisplayi ng operation by using t he sur round ing  light, t heL CDdevice in clud ing a semi -tr ans missi vep lateon a ba cks urfac e of a light-g u id ing m em ber. The LC D d evi ce di scl o sed in  the  Patent document3  (Hereinafter,  con v e nti ona l  exa mp le 4) is a tra nsm is s i ve LCD d ev ice which p erformsth e  disp laying  opera tion by u si n g a ba ckli ght . In this  tr an s missive  L CD device , ase mi-tra nsmiss i ve p l a te (semi-transmi ssive m ember )  an d a l ig ht-shie l ding -use liqui d crystal e lement  (TN  type  liquid  c rystal  el em ent) are a r ranged at  theback of  t he l igh t-guid ingm e mber.  Tha tis,  in the L C D  d e vi ce ,  th e li ght-s hi eldi ng-use li q uid crys tal element  i s p r o videdo na n  oppositesid e tot h e side oft he l i gh t -guid ing me mber i n a sem i -tr an smissiv e p l a te, so as  to allow swi tc hing 
 1,_a first_light irradiating section serving_as a_wedge-shaped_converging section_and_a second light_irradiating section serving_as a wedge-shaped light_source section are_laminated_on an LCD panel, so that the respective thicknesses are complemented. On the other_hand,_the LCD_device_of_the conventional example 2 is_provided with a light-guiding section_behind an_LCD, and the light converging section for connecting_the_light path with_this light-guiding section. The light-guiding section has on its_periphery a mirror finished surface, except_for (a) a_surface_from_which light is emitted_toward the LCD and (b) an_aperture to which light from the_light converging section enters. In both of_the LCD devices of the conventional_examples 1 and 2, the_external light_converged by the light converging_section is guided_and diffusely_reflected by the_light-guiding section (light-irradiating section). Thus the_external light is_irradiated as a plane light source_to_the LCD.
Further, as_a_liquid_crystal display_device which performs_a_displaying process_by_using the surrounding light, there is_an_LCD device (Hereinafter, conventional example 3) whose_back surface side is_made_transparent by removing a_reflection sheet arranged on an_opposite side (back surface side to)_to the_side of_a liquid crystal panel in the light-guiding plate, used in the_transmissive LCD device. In this configuration,_sufficient aperture for taking_in the_light_is acquired, because_the_surrounding light_enters from the back surface of the_liquid crystal_display panel. As a result, a_good display can be_performed_under a strong surrounding light environment.
Further,_for example, Patent document 3 discloses_another example of the LCD_device_which_performs the displaying operation by_using the surrounding light, the LCD_device including a_semi-transmissive plate on a back surface of_a_light-guiding member. The LCD device disclosed_in_the Patent document 3 (Hereinafter, conventional_example_4)_is a transmissive LCD device_which performs the displaying operation by_using a backlight. In this transmissive LCD device, a_semi-transmissive plate (semi-transmissive_member) and a light-shielding-use liquid_crystal_element_(TN type liquid crystal element) are arranged at the back_of the_light-guiding member. That_is, in the LCD device, the light-shielding-use liquid crystal element_is provided on an opposite side to_the side of the light-guiding member in a semi-transmissive plate, so_as to allow switching