CN106918950B - Display substrate and display device - Google Patents
Display substrate and display device Download PDFInfo
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- CN106918950B CN106918950B CN201710334864.0A CN201710334864A CN106918950B CN 106918950 B CN106918950 B CN 106918950B CN 201710334864 A CN201710334864 A CN 201710334864A CN 106918950 B CN106918950 B CN 106918950B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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Abstract
The invention relates to the technical field of display and discloses a display substrate and a display device. The display substrate comprises a graph of an adjusting layer positioned in each sub-pixel area, the adjusting layers in the sub-pixel areas transmitting light rays with different colors are different in thickness, the box thickness of the sub-pixel areas is adjusted, so that optical path differences of the light rays transmitting through all the sub-pixel areas are the same, the light ray transmittance of all the sub-pixel areas transmitting through the display device is the same, and the display quality is guaranteed. And only an adjusting layer is needed to be added, so that the structure is convenient to realize.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display substrate and a display device.
Background
The main structure of the liquid crystal display device comprises a first display substrate and a second display substrate which are opposite to each other, and liquid crystal filled between the first display substrate and the second display substrate, and color display is realized by arranging filter layers which transmit different colors of light in different sub-pixel areas.
In the existing liquid crystal display technology, the box thicknesses (liquid crystal thicknesses) corresponding to filter layers of different colors are consistent, but after light rays of different wavelengths penetrate through liquid crystal, optical path differences are caused to be different due to different optical rotation amounts of the liquid crystal to the light rays of different wavelengths, so that the light transmittance of sub-pixels of different colors is different, adjustment is performed by a circuit algorithm after actual test is performed, each batch of produced light needs to be tested and adjusted, and time and cost are required to be spent.
Disclosure of Invention
The invention provides a display substrate and a display device, which are used for solving the problem that the display quality is influenced due to different light transmittance of sub-pixel areas with different colors of the display device.
In order to solve the foregoing technical problem, an embodiment of the present invention provides a display substrate for a display device, where the display device includes a plurality of pixel regions, each pixel region includes a plurality of sub-pixel regions, and the display substrate includes:
the adjusting layer in each sub-pixel region has different thickness, so that the transmittance of light passing through all the sub-pixel regions of the display device is the same.
The embodiment of the invention also provides a display device, which comprises a first display substrate and a second display substrate which are paired, and liquid crystal filled between the first display substrate and the second display substrate, wherein the display device comprises a plurality of pixel areas, each pixel area comprises a plurality of sub-pixel areas, the first display substrate adopts the display substrate, the adjusting layer is arranged on the surface, close to the liquid crystal, of the substrate of the first display substrate, and the thicknesses of the adjusting layers in the sub-pixel areas transmitting different colors of light are different, so that the spacing distance between the first display substrate and the second display substrate corresponding to each sub-pixel area is adjusted, and the light transmittance of all the sub-pixel areas is the same.
The technical scheme of the invention has the following beneficial effects:
in the technical scheme, the adjusting layer is arranged in the sub-pixel area of the display device to adjust the box thickness of the sub-pixel area, so that the optical path difference of light rays penetrating through all the sub-pixel areas is the same, the transmittance of the light rays penetrating through all the sub-pixel areas of the display device is the same, and the display quality is ensured. And only an adjusting layer is needed to be added, so that the structure is convenient to realize.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a display substrate according to an embodiment of the invention;
fig. 2 is a schematic view showing a structure of a display device in an embodiment of the present invention;
fig. 3 shows a corresponding relationship between the cell thickness of the sub-pixel region and the transmittance of light of different colors.
Detailed Description
The invention provides a display substrate, which is used in a colorful liquid crystal display device, wherein the liquid crystal display device comprises a plurality of pixel areas, each pixel area comprises a plurality of sub-pixel areas, each sub-pixel area transmits light rays with specific colors, and the plurality of sub-pixels are used for realizing colorful display in a matching way. The box thicknesses (corresponding to the thicknesses of the filled liquid crystal) of the sub-pixel regions corresponding to different colors of the display substrate are different, so that the optical path difference of light rays with different wavelengths passing through the liquid crystal is consistent, the light transmittance of the sub-pixel regions with different colors is consistent, and the display quality is ensured.
The cell thickness of each sub-pixel region referred to in the following refers to the thickness of the liquid crystal filled in the sub-pixel region.
The following detailed description of embodiments of the present invention will be made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 1 and fig. 2, the present embodiment provides a display substrate for a display device. The display device comprises a plurality of pixel regions, each pixel region comprises a plurality of sub-pixel regions, and each sub-pixel region transmits light of a specific color. Each pixel region may specifically include a red sub-pixel region 101 transmitting red light, a green sub-pixel region 102 transmitting green light, and a blue sub-pixel region 103 transmitting blue light, and may further include a white sub-pixel region transmitting white light or a yellow sub-pixel region transmitting yellow light, so as to implement color display. Of course, in order to realize color display, the sub-pixel region combination of each pixel region is not limited to the above-mentioned one, and is not listed here.
The display substrate comprises a substrate 100 and a pattern of the adjusting layer 1 which is arranged on the substrate 100 and located in each sub-pixel region, and the thicknesses of the adjusting layers 1 in the sub-pixel regions which transmit different colors of light are different, so that the light transmittance of all the sub-pixel regions of the display device is the same.
According to the technical scheme, the adjusting layer is arranged in the sub-pixel area and used for adjusting the box thickness of the sub-pixel area of the display device, so that the optical path difference of light rays penetrating through all the sub-pixel areas is the same, the light ray transmittance of all the sub-pixel areas penetrating through the display device is the same, and the display quality is guaranteed. And only an adjusting layer is needed to be added, so that the structure is convenient to realize.
In the liquid crystal display technology, a pattern of a filter layer for transmitting light of a specific color is arranged in each sub-pixel region of a display substrate, so that the light of the required color is transmitted in each sub-pixel region. For example: a red filter layer 11 is provided in the red sub-pixel region 101, a green filter layer 12 is provided in the green sub-pixel region 102, and a blue filter layer 13 is provided in the blue sub-pixel region 103.
Specifically, for each sub-pixel region, the filter layer may be disposed on a surface of the adjustment layer 1 facing away from the substrate 100 of the display substrate, and the adjustment layer 1 may provide a flat surface for the filter layer. Of course, the filter layer may also be disposed on a side of the adjustment layer adjacent to the substrate of the display substrate. Because the filter layer and the adjusting layer are arranged on the same display substrate, the alignment precision is high, and the transmittance of light rays with different colors can be effectively ensured to be the same after the adjusting layer is adjusted.
In order to ensure normal display, the light transmittance of each sub-pixel region needs to be set to be greater than 10%, and under the condition that material limitation is not considered, the larger the light transmittance of the sub-pixel region is, the better the light transmittance is, and the reduction of power consumption is facilitated.
The correspondence between the transmittance of different colored light and the cell thickness of the sub-pixel regions is illustrated in fig. 3. The solid line in the figure represents the correspondence between the red light and the cell thickness of the sub-pixel region, the dotted line represents the correspondence between the green light and the cell thickness of the sub-pixel region, and the dotted line represents the correspondence between the blue light and the cell thickness of the sub-pixel region.
According to the relationship shown in fig. 3, when each pixel region of the display substrate includes a red sub-pixel region 101 for transmitting red light, a green sub-pixel region 102 for transmitting green light, and a blue sub-pixel region 103 for transmitting blue light, the thickness of the adjustment layer 1 in the red sub-pixel region 101 is set to be greater than the thickness of the adjustment layer 1 in the green sub-pixel region 102, and the thickness of the adjustment layer 1 in the green sub-pixel region 102 is set to be greater than the thickness of the adjustment layer 1 in the blue sub-pixel region 103, so as to ensure that the light transmittances of the red sub-pixel region 101, the green sub-pixel region 102, and the blue sub-pixel region 103 are the same, as shown in fig. 1 and fig. 2.
Specifically, the following can be set: the thickness of the adjusting layer 1 in the red sub-pixel region 101 is 7000-1300 angstroms, the thickness of the adjusting layer 1 in the green sub-pixel region 102 is 6000 angstroms, and the thickness of the adjusting layer 1 in the blue sub-pixel region 103 is 1000-5000 angstroms. Of course, this is only a specific implementation structure, and the thickness of the adjustment layer in each sub-pixel region may be set as needed as long as the above relationship is satisfied.
For the sub-pixel regions transmitting light of other colors, the thickness of the adjustment layer in each sub-pixel region can be set according to the corresponding relationship between the transmittance of light of different colors and the box thickness of the sub-pixel region, so as to obtain the required box thickness.
Other structures of the display substrate are described in detail in the prior art, for example: when the display substrate is a thin film transistor array substrate, the display substrate further comprises a thin film transistor, an insulation structure, a pixel electrode and the like; when the display substrate is a color film substrate, the display substrate further includes a black matrix and the like, which is not described in detail herein.
As shown in fig. 2, the present embodiment also provides a display device including a first display substrate 10 and a second display substrate 20 which are paired with each other, and a liquid crystal (not shown in the figure) filled between the first display substrate 10 and the second display substrate 20. The display device comprises a plurality of pixel areas, each pixel area comprises a plurality of sub-pixel areas, each sub-pixel area transmits light of a specific color, and the sub-pixel areas are matched to realize color display.
Wherein, the first display substrate 10 adopts the display substrate as described above, the adjustment layer 1 is disposed on the surface of the base 100 of the first display substrate 10 close to the liquid crystal (i.e. close to the second display substrate 20), and the thicknesses of the adjustment layers 1 in the sub-pixel regions transmitting different color lights are different, so as to adjust the spacing distance (d shown in fig. 2) between the first display substrate 10 and the second display substrate 20 corresponding to each sub-pixel region (e.g. d is shown in fig. 2)1、d2、d3) So that the light transmittance of all the sub-pixel regions is the same, and the display quality is ensured. And only an adjusting layer is needed to be added, so that the realization is convenient.
For the liquid crystal display device, the first display substrate 10 may be an array substrate or a color film substrate. Each sub-pixel area of the color film substrate is provided with a pattern of a filter layer which transmits light rays with specific colors, so that the light rays with the required colors can be transmitted. For example: and arranging a red filter layer in the red sub-pixel area, arranging a green filter layer in the green sub-pixel area, and arranging a blue filter layer in the blue sub-pixel area.
In this embodiment, adjustment layer 1 with the filter layer sets up on same display substrate, and the counterpoint precision is high, can effectively guarantee that the transmissivity of the light of different colours is the same after the adjustment through the adjustment on adjustment layer.
Wherein the filter layer may be disposed on a surface of the adjustment layer near a display side of the display device. Or on the side of the adjustment layer facing away from the display side of the display device.
It should be noted that the filter layer and the adjustment layer may also be disposed on different display substrates of the display device, that is, the adjustment layer is disposed on a surface of the substrate of the first display substrate close to the liquid crystal (i.e., close to the second display substrate), and the filter layer is disposed on the second display substrate.
In a specific embodiment, the first display substrate 10 is an array substrate of a liquid crystal display device, the adjustment layer 1 and the filter layer are disposed on the first display substrate 10, the alignment precision is high, and the transmittance of light rays with different colors can be effectively ensured to be the same after adjustment through the adjustment layer 1. Further, the filter layer may be disposed on a surface of the adjustment layer 1 near the display side of the display device, and the adjustment layer 1 may provide a flat surface for the filter layer.
In order to ensure normal display, the light transmittance of each sub-pixel region needs to be set to be greater than 10%, and the greater the light transmittance of the sub-pixel region is, the better the light transmittance is, without considering material limitations, so as to reduce power consumption.
Referring to fig. 2, taking an example that each pixel region includes a red sub-pixel region 101, a green sub-pixel region 102, and a blue sub-pixel region 103, the thickness of the adjustment layer 1 in the red sub-pixel region 101 is greater than the thickness of the adjustment layer 1 in the green sub-pixel region 102, and the thickness of the adjustment layer 1 in the green sub-pixel region 102 is greater than the thickness of the adjustment layer 1 in the blue sub-pixel region 103, so as to ensure that the light transmittances of the red sub-pixel region 101, the green sub-pixel region 102, and the blue sub-pixel region 103 are consistent.
The method specifically comprises the following steps: the thickness of the adjustment layer in the red sub-pixel region 101 is 7000-1300 angstroms, and the first display substrate 10 and the second display substrate 20 are corresponding to the first spacing distance d of the red sub-pixel region 10112.8-3.4 um;
the thickness of the adjustment layer in the green sub-pixel region 102 is 6000 angstroms, and the first display substrate 10 and the second display substrate 20 correspond to the green sub-pixel regionSecond separation distance d of domain 1022Is 3.55 um;
the thickness of the adjusting layer in the blue sub-pixel region 103 is 1000-5000 angstroms, and the first display substrate 10 and the second display substrate 20 correspond to a third spacing distance d of the blue sub-pixel region 1033Is 3.6-4.2 um.
The box thicknesses corresponding to the sub-pixel regions with different colors in the structure are different, so that the light transmittance of all colors of light penetrating through the display device is the same, and the display quality is ensured.
Of course, this is only a specific implementation structure, and the thickness of the adjustment layer in each sub-pixel region may be set as needed as long as the above relationship is satisfied.
Different thicknesses of the adjustment layer will result in different capacitances of the storage capacitors for different color sub-pixel regions. When the thin film transistor is used as a driving device, in order to ensure the display quality, the on-state currents of the thin film transistors in the sub-pixel regions transmitting light rays with different colors are set to be different, so that the charging of all the sub-pixel regions is consistent, including the charging amount and the charging time.
Specifically, the charging of all the sub-pixel regions can be uniform by adjusting the channel width-length ratios of the thin film transistors corresponding to the sub-pixel regions of different colors. The principle is as follows: the larger the channel width-to-length ratio of the thin film transistor is, the larger the on-state current is, the faster the charging is, and the larger the amount of charge in the same time is.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (7)
1. A display substrate for a display device, the display device comprising a plurality of pixel regions, each pixel region comprising a plurality of sub-pixel regions, the display substrate comprising:
the adjusting layer is positioned in the pattern of the adjusting layer of each sub-pixel area, and the thicknesses of the adjusting layers in the sub-pixel areas transmitting different colors of light are different, so that the light transmittance of all the sub-pixel areas transmitting the display device is the same;
the display substrate further includes:
a pattern of filter layers located in each sub-pixel region for transmitting light of a specific color;
for each sub-pixel region, the filter layer is arranged on the surface of the adjusting layer, which faces away from the substrate of the display substrate.
2. The display substrate of claim 1, wherein each of the sub-pixel regions has a light transmittance of greater than 10%.
3. The display substrate of claim 2, wherein each pixel region comprises at least a red sub-pixel region transmitting red light, a green sub-pixel region transmitting green light, and a blue sub-pixel region transmitting blue light;
the thickness of the adjusting layer in the red sub-pixel area is larger than that in the green sub-pixel area, and the thickness of the adjusting layer in the green sub-pixel area is larger than that in the blue sub-pixel area.
4. The display substrate of claim 3, wherein the thickness of the adjustment layer in the red sub-pixel region is 7000-1300 angstroms, the thickness of the adjustment layer in the green sub-pixel region is 6000 angstroms, and the thickness of the adjustment layer in the blue sub-pixel region is 1000-5000 angstroms.
5. A display device, including the first display base plate and second display base plate to the box, and pack the liquid crystal between said first display base plate and second display base plate, the said display device includes a plurality of pixel areas, each pixel area includes a plurality of sub-pixel areas, characterized by that, the said first display base plate adopts the display base plate of any claim 1-4, the said adjustment layer is set up on the surface close to liquid crystal of the base of the said first display base plate, the thickness of the adjustment layer in the sub-pixel area which transmits the different color light is different, in order to adjust the said first display base plate and second display base plate to correspond to the interval distance of each sub-pixel area, make the light transmittance through all sub-pixel areas the same;
the display device further includes:
a pattern of filter layers located in each sub-pixel region for transmitting light of a specific color, the filter layers being disposed on the first display substrate;
for each sub-pixel region, the filter layer is arranged on the surface of the adjusting layer, which is far away from the substrate of the first display substrate.
6. The display device according to claim 5, wherein each pixel region includes a red sub-pixel region transmitting red light, a green sub-pixel region transmitting green light, and a blue sub-pixel region transmitting blue light;
the thickness of the adjusting layer in the red sub-pixel area is 7000-1300 angstroms, and the spacing distance between the first display substrate and the second display substrate corresponding to the red sub-pixel area is 2.8-3.4 um;
the thickness of the adjusting layer in the green sub-pixel area is 6000 angstroms, and the distance between the first display substrate and the second display substrate corresponding to the green sub-pixel area is 3.55 microns;
the thickness of the adjusting layer in the blue sub-pixel area is 1000-5000 angstroms, and the distance between the first display substrate and the second display substrate corresponding to the blue sub-pixel area is 3.6-4.2 um.
7. The display device according to claim 5, further comprising:
the thin film transistors in each sub-pixel region transmit different color light, and the thin film transistors in the sub-pixel regions transmit different color light have different on-state currents.
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| CN201710334864.0A CN106918950B (en) | 2017-05-12 | 2017-05-12 | Display substrate and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107884981B (en) * | 2017-12-26 | 2020-06-23 | 深圳市华星光电技术有限公司 | Color film substrate, manufacturing method thereof and liquid crystal panel |
| US10394074B2 (en) | 2017-12-26 | 2019-08-27 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Color film substrate and method of manufacturing the same, liquid crystal panel |
| CN109581726A (en) * | 2018-12-18 | 2019-04-05 | 惠科股份有限公司 | Display panel and manufacturing method |
| CN109671407B (en) * | 2019-01-14 | 2020-12-29 | 惠科股份有限公司 | Array substrate, display panel and display device |
| CN111999942B (en) * | 2020-08-31 | 2022-09-13 | 厦门天马微电子有限公司 | Display panel and display device |
| CN114648925A (en) * | 2020-12-21 | 2022-06-21 | 深圳市柔宇科技股份有限公司 | Display device |
| CN114114781B (en) * | 2021-11-30 | 2024-07-02 | 京东方科技集团股份有限公司 | Liquid crystal lens and display device |
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| JPS62148926A (en) * | 1985-09-10 | 1987-07-02 | Casio Comput Co Ltd | Color liquid crystal display element |
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| CN101120304A (en) * | 2005-05-26 | 2008-02-06 | 郡是株式会社 | Transparent planar body and transparent touch switch |
| CN101799599A (en) * | 2010-03-18 | 2010-08-11 | 友达光电股份有限公司 | Three-dimensional display and display method thereof |
| CN205844712U (en) * | 2016-07-29 | 2016-12-28 | 上海中航光电子有限公司 | Array base palte and display floater |
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