CN101819480B - Display device - Google Patents
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- CN101819480B CN101819480B CN2009103005561A CN200910300556A CN101819480B CN 101819480 B CN101819480 B CN 101819480B CN 2009103005561 A CN2009103005561 A CN 2009103005561A CN 200910300556 A CN200910300556 A CN 200910300556A CN 101819480 B CN101819480 B CN 101819480B
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- display
- retardation plate
- touch
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Abstract
The invention discloses a touch control module which comprises a touch control panel, a first retarder, a second retarder and a polarization piece, wherein the touch control panel is provided with a display surface and an embedded surface which are opposite to each other; the first retarder is arranged on the display surface; the second retarder is arranged on the embedded surface; and the polarization piece is arranged on the first retarder. The invention also provides a display device applying the touch control module. The invention can improve the image contrast expression of the display device in strong light environment.
Description
Technical field
The present invention is about display device, and particularly has the display device of touch controllable function and a touch-control module of interior application (touch panel module) thereof about a kind of, uses promoting the contrast expression of display device under the high light environment.
Background technology
Fig. 1 has shown a kind of convention display device 10, and it has comprised display module 12, and touch-control module 50 is arranged on the display plane 30 of display module 12.
Display module 12 comprises display panel (like liquid crystal panel or organic electroluminescence panel).Touch-control module 50 comprises contact panel 14 and is attached at the polarization sheet (polarizer) 24 on the display plane 26 of contact panel 14.Touch-control module 50 is provided with in the face of the display plane 30 of display module 12, and its 28 on chimeric plane regards to the display plane 30 of display module 12, and its display plane 26 then regards to user (Fig. 1 top).
At this; Contact panel 14 mainly comprises relative glass substrate 16 and poly terephthalic acid vinyl acetate (polyethylene terephthalate; PET) substrate 18; On the surface of glass substrate 16 and pet substrate 18, be formed with light transmission conductive layer 20 respectively, and the surface of pet substrate 18 is defined as the usefulness of display plane 26, and the surface of glass substrate is defined as chimeric surperficial 28 usefulness.Between glass substrate 16 and pet substrate 18, then have gap 22, be unlikely to touch each other when touching touch-control module 50, to guarantee to be formed between the light transmission conductive layer 20 on glass substrate 16 and the pet substrate 18.At this, contact panel 14 can be resistance-type, condenser type or other type contact panel.Based on the demand of assembling, 12 of touch-control module 50 and display modules then possibly have gap 40, thereby touch-control module 50 and display module 12 are separated each other.
In convention display device 10 as shown in Figure 1, when in the ambient light transmission touch panel 14 each rete the time, between each rete, also produce reflex simultaneously, so reflex with deterioration the image contrast expression of display device 10.The setting of polarization sheet 24 helps to reduce the light quantity that gets in the display device 10, but limited in high light environment (for example sunshine direct projection) effect.
In addition; Owing to still have gap 40 between touch-control module 50 and the display module 12; When light also can produce aforesaid reflection situation during through the handing-over mouth of the handing-over mouth of this gap 40 and glass substrate 16 and gap 40 and display plane 30, same deterioration the image contrast expression of display device 10.
Moreover the weight of glass substrate 16 has heavier relatively, is unfavorable for the lightweight and the Portability of display device 10.In addition, also because the use of hard glass substrate 16, make display device 10 and do not have pliability.
Summary of the invention
In view of this, the invention provides the display device of a kind of touch-control module and application thereof, use promoting the image contrast expression of display device under the intense light irradiation environment.
In an embodiment, touch-control module of the present invention comprises:
Contact panel has relative display surface and chimeric surface; First retardation plate is arranged on this display surface; Second retardation plate is arranged on this chimeric surface; And the polarization sheet, be arranged on this first retardation plate.
In another embodiment, display device of the present invention comprises:
Display module; And touch-control module, be arranged on this display module.Wherein above-mentioned touch-control module comprises contact panel, has relative display surface and chimeric surface; First retardation plate is arranged on this display surface; Second retardation plate is arranged on this chimeric surface; The polarization sheet is arranged on this first retardation plate.
In another embodiment, touch-control module of the present invention comprises:
Contact panel has relative display surface and chimeric surface; And the polarization sheet, be arranged on this display surface of this contact panel.
In another embodiment, display device of the present invention comprises:
Display module; And touch-control module, be arranged on this display module, wherein chimeric surperficial this display module of entity contact of this touch-control module.Above-mentioned touch-control module comprises: contact panel has relative display surface and chimeric surface; And the polarization sheet, be arranged on this display surface of this contact panel.
In order to let above and other objects of the present invention, characteristic and the advantage can be more obviously understandable, hereinafter is special lifts a preferred embodiment, and cooperates appended diagram, elaborates as follows:
Description of drawings
Fig. 1 is the diagrammatic cross-section of convention display device;
Fig. 2 is the diagrammatic cross-section according to the display device of one embodiment of the invention;
Fig. 3 is the diagrammatic cross-section according to the display device of another embodiment of the present invention;
Fig. 4 is according to the spatial structure exploded view of the display device of one embodiment of the invention and polarisation action principle synoptic diagram;
Fig. 5 is according to the spatial structure exploded view of the display device of another embodiment of the present invention and polarisation action principle synoptic diagram;
Fig. 6 is the diagrammatic cross-section according to the display device of another embodiment of the present invention;
Fig. 7 is the diagrammatic cross-section according to the display device of another embodiment of the present invention;
Fig. 8 is display device spatial structure exploded view and the polarisation action principle synoptic diagram according to another embodiment of the present invention; And
Fig. 9 is according to the display device spatial structure exploded view of another embodiment of the present invention and polarisation action principle synoptic diagram.
Embodiment
Embodiments of the invention will cooperate diagrammatic cross-sections such as Fig. 2, Fig. 3, Fig. 6 and Fig. 7 and hereinafter and explain orally.In addition, Fig. 4 and Fig. 5 then are respectively the spatial structure exploded view and the polarisation action principle synoptic diagram of display device in Fig. 2 and Fig. 3, and Fig. 8 and Fig. 9 then are respectively the spatial structure exploded view and the polarisation action principle synoptic diagram of display device in Fig. 7.
Please with reference to Fig. 2; Be section situation according to the display device 100 of one embodiment of the invention; Display device 100 has comprised display module 102 and has been arranged at the touch-control module 150 on the display module 102 that wherein touch-control module 150 is arranged on the display plane 130 of display module 102.
As shown in Figure 2; Display module 102 for example is the image display module of liquid crystal indicator (LCD) or OLED (OLED); But do not limit the present invention with above-mentioned image display, display module 102 also can be the image display of other type.150 of touch-control modules comprise contact panel 104 and are formed at retardation plate (retarder) 116 and the polarization sheet (polarizer) 114 on the display plane 118 of contact panel 104 in regular turn.In addition, 122 on the chimeric plane of contact panel 104 regards to the display plane 130 of display module 102, on display plane 130, then is formed with retardation plate 120.Is above-mentioned retardation plate 116 and 120 for example 1/4 wavelength (1/4? Retardation plate, wherein the misty China fir badger of Rong is tried to gain ǔ あ
At this, contact panel 104 mainly comprises two relative first transparent substrates 106 and second transparent substrates 108.First transparent substrates 106 for example is the not flexible substrate of glass substrate, and second transparent substrates 108 for example is poly terephthalic acid vinyl acetate (polyethylene terephthalate, PET) the flexible substrate of substrate.On the surface of first transparent substrates 106 and second transparent substrates 108, be formed with light transmission conductive layer 110 respectively; It for example is indium tin oxide (ITO) layer; And the surface of second transparent substrates 108 is as the usefulness of display plane 118, and the surface of first transparent substrates 106 is as the usefulness on chimeric plane 122.Between first transparent substrates 106 and second transparent substrates 108, then have gap 112, to be unlikely to touch each other between the light transmission conductive layer 110 of when touching touch-control module 150, guaranteeing to be formed at first transparent substrates 106 and second transparent substrates 108.At this, contact panel 104 for example is an electric resistance touch-control panel, but contact panel 104 does not limit the present invention with kenel shown in Figure 2, and it also can be other type contact panel like capacitance type touch-control panel.In addition, based on the demand of assembling, 102 of touch-control module 150 and display modules then possibly have gap 140, thereby touch-control module 150 and display module 102 are separated each other.
In present embodiment; By on the display plane 118 of the contact panel in display device 100 104 and the chimeric plane 122 retardation plate 116 and 120 being set respectively; Can improve extraneous light incident and get into display device 100 backs in contact panel 104 and the reflection situation between touch-control module 150 and the display module 102; Thereby help the image display surface of display device under the intense light irradiation environment and the lifting of display device contrast, thereby improved the problem of internal reflection that the convention display device is met with.
Fig. 3 has shown the section situation according to the display device 100 of another embodiment of the present invention.As shown in Figure 3; At these display device 100 broadly similars in display device 100 ' as shown in Figure 2; Its difference place only is that retardation plate is arranged on the display plane 130 of display module 120 for 120 this moments, and the chimeric plane 122 of first transparent substrates 106 is then for exposing at this moment.
Fig. 4 and Fig. 5 are a series of synoptic diagram, have shown spatial structure exploded view and polarisation action principle according to Fig. 2 and display device shown in Figure 3.
As shown in Figure 4, for example be the linear polarization sheet at this polarization sheet 114, be provided with grating 115 in polarization sheet 114, with purposes as optical filtering with bearing of trend I.116 of retardation plates are arranged at after the polarization sheet 114, have fast axial light grid 117, and retardation plate 116 for example are 1/4 wavelength retardation plate, or for being familiar with identical other optical component that turns to function that has that this art knows.
104 of contact panels are arranged at after the retardation plate 116, and retardation plate 120 is arranged at after the contact panel 104, have the fast axial light grid 121 of bearing of trend with the fast axial light grid 117 of retardation plate 116 deviation angle that " differs 90 degree ".Second retardation plate 120 also can be 1/4 wavelength retardation plate, or for being familiar with identical other member that turns to function that has that this art knows, and display module 102 is arranged at after the retardation plate 120.
In display device as shown in Figure 4; After the incident light that comes from the outside 2 goes into to inject the polarization sheet 114 of display device by the external world; Just can form the close incident rectilinearly polarized light 2a of bearing of trend I of grating 115 on incident polarization direction and the polarization sheet 114; And incident rectilinearly polarized light 2a just can form incident circularly polarized light 2b and further incident and transmission touch panel 104 after incident and penetrating retardation plate 116, and advances towards retardation plate 120 in transmission touch panel 104 continued.Most incident circularly polarized light 2b will form bearing of trend I with the grating 115 of polarization on the sheet 114 and differ the 90 incident rectilinearly polarized light 2c that spend when penetrating retardation plate 120 this moment.This incident rectilinearly polarized light 2c then will further go into to inject display device 102.
And as shown in Figure 5, when incident circularly polarized light 2b when getting into retardation plate 120, the incident circularly polarized light 2b of part is the surface reflection of self-dalay sheet 120, and advances towards contact panel 104 directions, and then forms reflection circle polarized light 2b '.After the 2b ' incident of reflection circle polarized light and the transmission touch panel 104 and first retardation plate 116; Can form reflection rectilinearly polarized light 2a '; And continue to advance towards polarization sheet 114; Because the polarization direction of reflection rectilinearly polarized light 2a ' differs 90 degree deviation angle with the bearing of trend I of the grating 115 of polarization sheet 114; Therefore the sheet 114 that polarizes just can block and reflect rectilinearly polarized light 2a ' and make it can't penetrate polarization sheet 114 and the entering external world, and likewise, reflection also can can't get into the external world (except 120 reflected light by polarization sheet 114 from the reflected light of contact panel 104 and retardation plate 116; 104 and 116 also reflected light can occur, and 114 can be with under 104,116,120 the reflection light trap).
Enforcement situation with reference to Fig. 4 and Fig. 5 can be known; In present embodiment in display device 100/100 ' by retardation plate 116 setting with retardation plate 120; Can the reflection circle polarized light 2b ' that produced in the touch-control module of extraneous incident light in display device 100/100 ' be converted into reflection rectilinearly polarized light 2a '; And because its phase place has been changeed 90 degree; So polarization sheet 114 will block this reflection rectilinearly polarized light 2a ' and make it to penetrate into the external world; Therefore reflecting rectilinearly polarized light 2a ' can incident not put user's eyes, and then has promoted the contrast of display device 100/100 ', has particularly helped display device 100/100 ' in the lifting like the image contrast expression under the intense light irradiation environment under the sunlight.
Yet; In in the display device 100/100 ' shown in Fig. 2 to Fig. 5; Because first transparent substrates 106 (being shown in Fig. 2 and Fig. 3) in the touch-control module 104 have still adopted the not flexible material like glass, lightweight and the display device 100/100 ' that therefore still is unfavorable for display device 100/100 ' is still the same and do not possess pliability as the convention display device.
Please, shown display device section situation respectively according to another embodiment of the present invention with reference to a series of synoptic diagram such as Fig. 6 and Fig. 7.In present embodiment, adopt in the touch-control module in the display device than the more light-weighted substrate material of glass and its to have the pliability of appropriateness.
Please with reference to Fig. 6, shown the section situation according to the display device 200 of one embodiment of the invention, display device 200 has comprised display module 202 and has been arranged at the touch-control module 250 on the display module 202.
As shown in Figure 6, display module 202 for example is liquid crystal indicator (LCD) or OLED image displays such as (OLED), but not with above-mentioned image display restriction the present invention, display module 202 also can be the display device of other kenel.250 of touch-control modules comprise contact panel 216 and are formed at the polarization sheet (polarizer) 212 on the display plane 214 of contact panel 204.In addition, 230 entities in the chimeric plane of contact panel 216 have contacted the surface of display module 202 and entity contact with it, and do not have any gap this moment between touch-control module 250 and display module 202.
At this, contact panel 216 mainly comprises two relative first transparent substrates 204 and second transparent substrates 206.In present embodiment, first transparent substrates 204 and second transparent substrates 206 all adopt like poly terephthalic acid vinyl acetate (polyethyleneterephthalate, the substrate of flexible materials PET).On the surface of first transparent substrates 204 and second transparent substrates 206, be formed with light transmission conductive layer 208 respectively, and the surface of second transparent substrates 206 is as the usefulness of display plane 214, and the surface of first transparent substrates 204 is as the usefulness on chimeric plane 230.Between first transparent substrates 204 and second transparent substrates 206, then have gap 210, to be unlikely to touch each other between the light transmission conductive layer 208 of when touching touch-control module 250, guaranteeing to be formed at first transparent substrates 204 and second transparent substrates 206.At this, contact panel 216 for example is an electric resistance touch-control panel, but its type and electric resistance touch-control panel and limit the present invention endlessly, it also can be the contact panel like other type of capacitance type touch-control panel.
In present embodiment, because first transparent substrates 204 and second transparent substrates 206 all adopt the flexible materials like the PET material, so touch-control module 250 can have appropriate pliability, thereby is applicable to the display device with non-planar display surfaces.Moreover owing to do not have the glass material that uses convention in the contact panel 216, so the overall weight of touch-control module 250 can more reduce and have light-weighted advantage, and then promoted the Portability of display device 200.In addition; Because contact panel 216 entities have contacted display module 202 and have not had the gap therebetween; Therefore can further improve resulting from the problem of internal reflection that cause in the gap between touch-control module and display module in the convention display device, the image contrast that therefore can improve display device 200.
As shown in Figure 7; In another embodiment; Can more in display device as shown in Figure 6 200, set up two retardation plates 218 and 220; It is covered on the chimeric plane 230 of first transparent substrates 204 respectively and the display plane 214 that is covered on second transparent substrates 206; Is above-mentioned retardation plate 218 and 220 for example 1/4 wavelength (1/4? Retardation plate; Is wherein the misty China fir badger of Rong tried to gain the fair moxibustion in ǔ あ S vermachen mortar stool
school? 02 entity has contacted retardation plate 218, and polarization sheet 212 then entity has contacted retardation plate 220.In present embodiment; By on the display plane 230 of the contact panel in display device 200 216 and the chimeric plane 214 retardation plate 218 and 220 being set respectively; Help to improve extraneous light incident and get into display device 200 backs in contact panel 216 and the reflection situation between touch-control module 250 and the display module 202; Thereby help the image display surface of display device under the intense light irradiation environment and the lifting of display device contrast, thereby improved the problem of internal reflection that the convention display device is met with.
Fig. 8 and Fig. 9 are a series of synoptic diagram, have shown according to the spatial structure exploded view of display device shown in Figure 7 both polarisation action principle.
As shown in Figure 8, for example be the linear polarization sheet at this polarization sheet 212, be provided with grating 213 in polarization sheet 212, with purposes as optical filtering with bearing of trend I.220 of retardation plates are arranged at after the polarization sheet 212; Have the fast axial light grid 221 that differ 45 degree deviation angle with the bearing of trend of grating 213 of polarization sheet 212; And retardation plate 220 for example is 1/4 wavelength retardation plate, or for being familiar with identical other optical component that turns to function that has that this art knows.216 of contact panels are arranged at after the retardation plate 220, and retardation plate 218 is to be arranged at after the contact panel 216, have the fast axial light grid 219 with the identical deviation angle of bearing of trend of the fast axial light grid 221 of retardation plate 220.Retardation plate 218 also can be 1/4 wavelength (1/4 in present embodiment? Retardation plate, or for being familiar with identical other member that turns to function that has that this art knows.
In display device as shown in Figure 8; After the incident light that comes from the outside 3 goes into to inject the polarization sheet 212 of display device by the external world; Just can form the close incident rectilinearly polarized light 3a of bearing of trend I of grating 213 on an incident polarization direction and the polarization sheet 212; And incident rectilinearly polarized light 3a just can form incident circularly polarized light 3b and further incident and transmission touch panel 216 after incident and penetrating retardation plate 220, and advances towards retardation plate 218 in transmission touch panel 216 continued.Most incident circularly polarized light 3b will form bearing of trend I with the grating 213 of polarization on the sheet 212 and differ the 90 incident rectilinearly polarized light 3c that spend when penetrating retardation plate 218 this moment.This incident rectilinearly polarized light 3c then will further go into to inject display module 202.
And it is as shown in Figure 9; Incident rectilinearly polarized light 3c is when going into to inject display module 202; The incident rectilinearly polarized light 3c of part will be from the surface reflection of display module part; The reflected light (not shown) that is produced is advanced towards retardation plate 218, and forms reflection circle polarized light 3b ' in penetrating retardation plate 218 backs.After the 3b ' incident of reflection circle polarized light and transmission touch panel 216 and retardation plate 220; Can form reflection rectilinearly polarized light 3a '; And continue to advance towards polarization sheet 212; Spend deviation angle because the polarization direction of reflection rectilinearly polarized light 3a ' differs 90 with the bearing of trend I of the grating 213 of the sheet 212 that polarizes, the sheet 212 that therefore polarizes just can block reflection rectilinearly polarized light 3a ' and make it can't penetrate polarization sheet 212 and the entering external world.
Enforcement situation with reference to Fig. 7 to Fig. 9 can be known; In present embodiment in display device 200 by retardation plate 220 setting with retardation plate 218; Can the reflection circle polarized light 3b ' that produced in the touch-control module of extraneous incident light in display device 200 be converted into reflection rectilinearly polarized light 3a '; And because its phase place has been changeed 90 degree; So polarization sheet 212 will block this reflection rectilinearly polarized light 3a ' and make it to penetrate into the external world; Therefore reflecting rectilinearly polarized light 3a ' can incident not put user's eyes, and then has promoted the contrast of display device 200, has particularly helped display device 200 in the lifting like the image contrast expression under the intense light irradiation environment under the sunlight.
Though the present invention discloses as above with preferred embodiment; Right its is not in order to limiting the present invention, anyly has the knack of this art, do not breaking away from the spirit and scope of the present invention; When can doing various changes and retouching, so protection scope of the present invention is as the criterion when looking the accompanying Claim book person of defining.
Claims (8)
1. a display device comprises display module and is arranged at the touch-control module on the display module, and it is characterized in that, this touch-control module comprises:
Contact panel has relative display surface and chimeric surface;
First retardation plate is arranged on this display surface;
Second retardation plate is arranged on this chimeric surface; And
The polarization sheet is arranged on this first retardation plate,
Wherein the second retardation plate entity of contact panel contacts this display module and does not have the gap therebetween.
2. display device according to claim 1 is characterized in that, this polarization sheet is the linear polarization sheet, has first grating that extends along first direction.
3. display device according to claim 2 is characterized in that, this first retardation plate and this second retardation plate are 1/4 wavelength retardation plate, has the fast axial light grid that differ 45 degree deviation angle with first grating that extends along first direction.
4. display device according to claim 1 is characterized in that, this contact panel comprises not flexible substrate.
5. display device according to claim 4 is characterized in that, this not the flexible substrate be glass substrate.
6. display device according to claim 1 is characterized in that this contact panel in fact only comprises flexible base plate.
7. display device according to claim 6 is characterized in that, this flexible base plate is a poly terephthalic acid vinyl acetate substrate.
8. display device according to claim 1 is characterized in that, this contact panel is electric resistance touch-control panel or capacitance type touch-control panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103005561A CN101819480B (en) | 2009-02-26 | 2009-02-26 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103005561A CN101819480B (en) | 2009-02-26 | 2009-02-26 | Display device |
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| Publication Number | Publication Date |
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| CN101819480A CN101819480A (en) | 2010-09-01 |
| CN101819480B true CN101819480B (en) | 2012-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009103005561A Expired - Fee Related CN101819480B (en) | 2009-02-26 | 2009-02-26 | Display device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102446010A (en) * | 2010-10-08 | 2012-05-09 | 联胜（中国）科技有限公司 | Touch panel and touch display device |
| CN102446040B (en) * | 2010-10-11 | 2015-02-18 | 联建(中国)科技有限公司 | Resistance type touch control panel |
| CN105260075A (en) * | 2011-11-01 | 2016-01-20 | 群康科技(深圳)有限公司 | Touch panel and touch display applying same |
| KR20160020803A (en) * | 2014-08-14 | 2016-02-24 | 삼성전자주식회사 | Outdoor display apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1637525A (en) * | 2004-01-05 | 2005-07-13 | Nec液晶技术株式会社 | Liquid crystal display device |
| CN1716025A (en) * | 2004-05-28 | 2006-01-04 | 鸿富锦精密工业（深圳）有限公司 | Semi-penetrating semi-reflecting type liquid crystal displaying device |
| CN101251663A (en) * | 2007-02-22 | 2008-08-27 | 松下电器产业株式会社 | Touch panel |
-
2009
- 2009-02-26 CN CN2009103005561A patent/CN101819480B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1637525A (en) * | 2004-01-05 | 2005-07-13 | Nec液晶技术株式会社 | Liquid crystal display device |
| CN1716025A (en) * | 2004-05-28 | 2006-01-04 | 鸿富锦精密工业（深圳）有限公司 | Semi-penetrating semi-reflecting type liquid crystal displaying device |
| CN101251663A (en) * | 2007-02-22 | 2008-08-27 | 松下电器产业株式会社 | Touch panel |
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