CN100368883C - Semi-transmission semi-reflection type liquid crystal display panel - Google Patents
Semi-transmission semi-reflection type liquid crystal display panel Download PDFInfo
- Publication number
- CN100368883C CN100368883C CNB2003101024541A CN200310102454A CN100368883C CN 100368883 C CN100368883 C CN 100368883C CN B2003101024541 A CNB2003101024541 A CN B2003101024541A CN 200310102454 A CN200310102454 A CN 200310102454A CN 100368883 C CN100368883 C CN 100368883C
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- Prior art keywords
- display panels
- transparency carrier
- polaroid
- light
- transflective display
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- 239000004973 liquid crystal related substance Substances 0.000 title claims description 12
- 239000000463 material Substances 0.000 claims abstract description 16
- 230000010287 polarization Effects 0.000 claims abstract description 7
- 230000004308 accommodation Effects 0.000 claims description 8
- 239000011159 matrix material Substances 0.000 claims description 6
- 239000011651 chromium Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 230000008676 import Effects 0.000 claims description 2
- XVOFZWCCFLVFRR-UHFFFAOYSA-N oxochromium Chemical compound [Cr]=O XVOFZWCCFLVFRR-UHFFFAOYSA-N 0.000 claims 1
- 239000004988 Nematic liquid crystal Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 239000000969 carrier Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229910019923 CrOx Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
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- Liquid Crystal (AREA)
Abstract
A transflective LCD panel is provided, which is matched with the backlight structure of the transmissive LCD panel and polarizers with compensation films are respectively added at the top and bottom of the LCD panel structure, and the display surface of the transmissive LCD panel can also generate reflective display effect by selecting the appropriate twist angle of the twisted nematic liquid crystal material and the included angle between the polarization angle of the compensation film and the polarizer.
Description
Technical field
The present invention relates to a kind of display panels, particularly relate to a kind of transflective display panels.
Background technology
Concerning lcd technology now, comprise " reflective " (Reflective Type) and " transmission-type " (Transmissive Type) two big classes.Wherein, the former utilizes the baffle reflection extraneous light that is attached on the LCD panel without backlight, and benefit is very power saving (number/one who has only transmission type LCD), shortcoming be darker occasion can't see the display screen content and contrast relatively poor, therefore generally use front light-source as secondary light source.Yet, when environment light source is not enough, pure reflective contrast and brightness receives discount greatly, and the contrast when outdoor high light environment of pure transmission-type is not enough, therefore if can cooperate the transmission-type technology of auxiliary backlight to form half-transmission half-reflection type (Transflective Type) LCD, can have transmission-type and reflective advantage simultaneously.Transflective display is just used external light source when extraneous light is enough, can light backlight when not enough is the scheme that has power saving and the auxiliary light of tool concurrently.
And, be applied to the display of portable electric product, as mobile phone and PDA etc., fundamental purpose is to want low-voltage and power saving.Thereby, can meet its demand for economic benefit with twisted nematic/STN Super TN formula (TN/STN) display for the portable electric product of not emphasizing animation display.Yet, with half-transmission half-reflection type (Transflective Type) structure applications when the traditional twisted nematic formula display, because the thickness of liquid crystal layer is fixed, and the required light path of transmission and reflection ray is different, easily causes the situation of reflected image generation image display quality variation.Therefore, transmission and reflected image can't be applied to traditional twisted nematic formula display simultaneously.
In order to improve the quality of reflected image, need in half-transmission half-reflection type (Transflective Type) display, to add the structure of double gap (dual gap), being about to reflection configuration is made in the liquid crystal layer, optical path when transmiting display surface to control transmission and reflection ray respectively is to improve reflected image; But this method can increase the complexity of operation and structure.In addition, general transflective liquid crystal display, its transmitted ray have the part light losing by reflection configuration the time, thereby cause the light utilization rate low excessively, and range of application is restricted.
Summary of the invention
In view of the problem of known technology, the invention provides a kind of transflective display panels, be the backing structure that cooperates transmissive liquid crystal panel, and respectively add polaroid with compensate film on liquid crystal panel structure top and bottom surface.Make the transmission-type panel produce transmission and reflection display effect whereby.
Module backlight is the primary clustering of transmissive liquid crystal panel, mainly provide liquid crystal panel one evenly, the light source of high brightness, wide viewing angle.Its ultimate principle is with point or linear light source commonly used, sees through the area source that succinct effectively optical mechanism changes into high brightness and homogeneous briliancy.General backing structure is to utilize the linear light source of cold-cathode tube to make light advance light guide plate (Light guide plate) through reflex housing, and the function of light guide plate is to control direction of light with the raising briliancy, and makes the homogenization of plate face briliancy.On making, can utilize the high organic substrate of light transmission rate, and make reflection site (dot), make light form repeatedly total reflection and refraction, and then the luminous energy average mark is dissipated on the plate face form area source by the design of reflection site in the plate face.
Transflective display panels of the present invention is to cooperate backing structure design and two polaroids with compensate film, can produce the effect of reflected image.Its structure comprises: first transparency carrier, second transparency carrier, liquid crystal material, second polaroid, first polaroid and backing structure.Accompany an accommodation space between second transparency carrier and first transparency carrier, and between the two across this accommodation space with superimposed mutually, the twisted nematic liquid crystal material then places in this accommodation space.First transparency carrier and second transparency carrier see through and are formed at its surperficial a plurality of electrodes, to apply a voltage to the twisted nematic liquid crystal material, and first transparency carrier is provided with first polaroid, second transparency carrier is provided with second polaroid, and it is a quarter-wave compensate film that two polaroids respectively have length of delay.Backing structure is arranged at first transparency carrier and the extraneous face that contact so that incident light to be provided, and incident light then passes first transparency carrier by the second transparency carrier outgoing, with the formation transmission image; Simultaneously, extraneous incident light can be by the first transparency carrier incident, and cooperate backing structure design and two polaroids with compensate film, can produce the effect of reflected image in second transparency carrier.
Wherein, the windup-degree of twisted nematic liquid crystal material be 0 to 50 the degree, the polarization angle of second polaroid and first polaroid is orthogonal, the polarization angle of compensate film be with polaroid in angle of 45 degrees.Simultaneously, for improving the contrast and the image quality of transmission-type display surface, also can form the antireflection light shield layer in display surface.
About feature of the present invention and example, existing preferred embodiment shown in conjunction with the accompanying drawings is described in detail as follows:
Description of drawings
Fig. 1 is the synoptic diagram of the transflective display panels of the embodiment of the invention;
Fig. 2 is the reflection display mode synoptic diagram of the embodiment of the invention; And
Fig. 3 is the transmissive display mode synoptic diagram of the embodiment of the invention.
The reference numeral explanation:
10 first transparency carriers
11 compensate films
12 polaroids
20 second transparency carriers
21 compensate films
22 polaroids
30 twisted nematic liquid crystal materials
31 electrodes
41 light sources
42 light guide plate
Embodiment
The present invention discloses a kind of transflective display panels, and this display panels makes transmissive liquid crystal panel reach transmission in conjunction with backing structure and the polaroid with compensate film and reflects the purpose that shows.
For being described in more detail its transmission and reflective mode, with reference to figure 1, Fig. 1 is the synoptic diagram of the transflective display panels of the embodiment of the invention.In this embodiment, include transmission-type display panel and backing structure.As shown in Figure 1, the transmission-type display panel is made up of first transparency carrier 10, second transparency carrier 20, a plurality of electrode 31, twisted nematic liquid crystal material 30, first polaroid 12 with compensate film 11,21 and second polaroid 22.Accompany an accommodation space between first transparency carrier 10 and second transparency carrier 20, and between the two across this accommodation space with superimposed mutually, 30 of twisted nematic liquid crystal materials are included in this accommodation space.First transparency carrier 10 and second transparency carrier 20 respectively are formed with a plurality of electrodes 31, to apply a voltage to twisted nematic liquid crystal material 30, and the surface of first transparency carrier 10 is provided with first polaroid 11, second transparency carrier 20 is provided with second polaroid, 22, two polaroids 12,22, and respectively to have length of delay be a quarter-wave compensate film 11,21.The windup-degree of its twisted nematic liquid crystal material 30 be 0 to 50 the degree, the polarization angle of second polaroid 22 and first polaroid 12 is orthogonal, the polarization angle of compensate film 11,21 be with polaroid 12,22 in angle of 45 degrees.And backing structure is made up of light source 41 and light guide plate 42, light guide plate 42 is to be located at the side of first transparency carrier 10,41 of light sources provide light to import light guide plate 42, make light guide plate 42 that uniform incident light is provided, make incident light pass first transparency carrier 10, to form transmission image by 20 outgoing of second transparency carrier.
The reflection display mode of embodiment, as shown in Figure 2, it is the reflection display mode synoptic diagram of the embodiment of the invention.Extraneous incident light is surround lighting or provides via light-emitting device that incident light cooperates the backing structure design to produce the effect of reflected image by the polaroid with compensate film 21,11 22,21 of the external world by second transparency carrier 20 and first transparency carrier 10 again.Its transmissive display mode, with reference to figure 3, it is the transmissive display mode synoptic diagram of the embodiment of the invention.Be the light source 41 and the backlight of light guide plate 42 as display surface with backing structure, as shown in Figure 3, incident light is by after first transparency carrier 10 and the twisted nematic liquid crystal material 30, by 20 outgoing of second transparency carrier to form transmission image.
In addition,, can form the antireflection light shield layer, to reduce the reflective light evil that is produced of each metal signal line in the display panels in the side of display surface for improving the contrast and the image quality of transmission image.The antireflection light shield layer can adopt the black matrix" (Black Matrix) of special processing to be made in the second transparency carrier surface.This black matrix" can one of them be formed by black resin (black resin) or chromium/chromated oxide (Cr/CrOx) material.
Transflective display panels of the present invention need not add reflecting plate (reflector) or double gap (dual gap) structure, can produce the display effect of transmission image and reflected image.And owing to do not add reflection board structure, transmitted ray does not have generation light and loses, and can improve the light service efficiency of transmissive display mode.
Claims (9)
1. transflective display panels comprises:
One has first transparency carrier of one first polaroid, and it is quarter-wave compensate film that this first polaroid has length of delay;
One has second transparency carrier of one second polaroid, and it is quarter-wave compensate film that this second polaroid has length of delay, inserts an accommodation space between this second transparency carrier and this first transparency carrier;
One places the liquid crystal material in this accommodation space; And
One backing structure, the design of this backing structure can reflect extraneous incident light,
Wherein, this transflective display panels does not comprise reflecting plate.
2. transflective display panels as claimed in claim 1, it is characterized in that: this backing structure is made up of a light source and a light guide plate, this light guide plate is arranged at the side of this first transparency carrier, this light source provides light to import this light guide plate, provides uniform face incident light via this light guide plate again.
3. transflective display panels as claimed in claim 1 is characterized in that: the windup-degree of this liquid crystal material is 0 to 50 degree.
4. transflective display panels as claimed in claim 1 is characterized in that: the polarization angle of this second polaroid and this first polaroid is orthogonal.
5. transflective display panels as claimed in claim 1 is characterized in that: the polarization angle of this compensate film and polaroid are in angle of 45 degrees.
6. transflective display panels as claimed in claim 1 is characterized in that: this second transparency carrier comprises an antireflection light shield layer, with contrast and the image quality that improves this display surface.
7. transflective display panels as claimed in claim 1 is characterized in that: this antireflection light shield layer is a black matrix".
8. transflective display panels as claimed in claim 7 is characterized in that: the material of this black matrix" is to be selected from black resin and chromium/chromium oxygen compound material one of them forms.
9. transflective display panels as claimed in claim 7 is characterized in that: this black matrix" is formed at the surface of this second transparency carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101024541A CN100368883C (en) | 2003-10-21 | 2003-10-21 | Semi-transmission semi-reflection type liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101024541A CN100368883C (en) | 2003-10-21 | 2003-10-21 | Semi-transmission semi-reflection type liquid crystal display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1609671A CN1609671A (en) | 2005-04-27 |
| CN100368883C true CN100368883C (en) | 2008-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2003101024541A Expired - Fee Related CN100368883C (en) | 2003-10-21 | 2003-10-21 | Semi-transmission semi-reflection type liquid crystal display panel |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4494380B2 (en) | 2006-09-29 | 2010-06-30 | 株式会社 日立ディスプレイズ | Liquid crystal display |
| CN104992678A (en) * | 2015-06-19 | 2015-10-21 | 西安乾易企业管理咨询有限公司 | Method for clear display of handheld equipment liquid crystal display in bright light |
| CN104992677B (en) * | 2015-06-19 | 2018-02-06 | 西安易朴通讯技术有限公司 | A kind of method for reducing screen of hand-held device backlight and using power consumption |
| CN110221376B (en) * | 2019-06-28 | 2022-07-05 | 昆山工研院新型平板显示技术中心有限公司 | Polaroid, display panel and preparation method of polaroid |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1219681A (en) * | 1997-12-11 | 1999-06-16 | 三洋电机株式会社 | Light conduction plate and its making method, area source and liquid crystal display unit with light conduction plate |
| US6295109B1 (en) * | 1997-12-26 | 2001-09-25 | Sharp Kabushiki Kaisha | LCD with plurality of pixels having reflective and transmissive regions |
| CN1345406A (en) * | 1999-03-30 | 2002-04-17 | 韦斯特电气株式会社 | Illuminator and liquid crystal display comprising illuminator |
| WO2002041072A1 (en) * | 2000-11-15 | 2002-05-23 | Nippon Oil Corporation | Semitransparent liquid crystal display device |
| US20020145689A1 (en) * | 2000-07-21 | 2002-10-10 | Yasushi Kaneko | Transflective liquid crystal display device |
-
2003
- 2003-10-21 CN CNB2003101024541A patent/CN100368883C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1219681A (en) * | 1997-12-11 | 1999-06-16 | 三洋电机株式会社 | Light conduction plate and its making method, area source and liquid crystal display unit with light conduction plate |
| US6295109B1 (en) * | 1997-12-26 | 2001-09-25 | Sharp Kabushiki Kaisha | LCD with plurality of pixels having reflective and transmissive regions |
| CN1345406A (en) * | 1999-03-30 | 2002-04-17 | 韦斯特电气株式会社 | Illuminator and liquid crystal display comprising illuminator |
| US20020145689A1 (en) * | 2000-07-21 | 2002-10-10 | Yasushi Kaneko | Transflective liquid crystal display device |
| WO2002041072A1 (en) * | 2000-11-15 | 2002-05-23 | Nippon Oil Corporation | Semitransparent liquid crystal display device |
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| CN1609671A (en) | 2005-04-27 |
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