CN104391396A - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN104391396A CN104391396A CN201410768938.8A CN201410768938A CN104391396A CN 104391396 A CN104391396 A CN 104391396A CN 201410768938 A CN201410768938 A CN 201410768938A CN 104391396 A CN104391396 A CN 104391396A
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- liquid crystal
- crystal display
- display device
- display panels
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Classifications
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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
- G02F1/133553—Reflecting elements
-
- 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
- G02F1/133512—Light shielding layers, e.g. black matrix
Abstract
The invention provides a liquid crystal display device, and belongs to the field of liquid crystal display. The liquid crystal display device comprises a backlight and a liquid crystal display panel, wherein a plurality of pixel units are formed on the liquid crystal display panel; each of the pixel units comprises at least a sub-pixel; each of the sub-pixels is divided into a reflecting zone and a transmitting zone; reflecting patterns positioned between the liquid crystal display panel and the backlight are formed in the reflecting zone. The liquid crystal display device adopting technical scheme can adjust the reflecting patterns under the conditions that the liquid crystal display panel and the backlight are invariable to adjust different transmitting area ratios of the sub-pixels, so as to meet the requirement on different white light color coordinates, and further ensure the brightness of the liquid crystal display panel.
Description
Technical field
The present invention relates to field of liquid crystal display, refer to a kind of liquid crystal display device especially.
Background technology
As shown in Figure 1, traditional liquid crystal display panel comprises: upper polarizer 1, color membrane substrates 2, be arranged on the black matrix 3 on color membrane substrates 2 and R/G/B (Red Green Blue, RGB) resin 4, array base palte 7, lower polaroid 8, be arranged on the liquid crystal layer 6 between array base palte 7 and color membrane substrates 2, be positioned at the oriented layer 5 of liquid crystal layer 6 both sides, also comprise the picture element matrix be arranged on array base palte, each pixel is generally divided into again RGB (Red Green Blue, RGB) three sub-pixels, accordingly, color membrane substrates is also provided with corresponding subpixel area, each subpixel area is provided with the resin bed of corresponding respective color, the white color coordinate of liquid crystal display is generally by kind and the thickness of RGB resin bed, the glazed area ratio of RGB subpixel area and the spectrum of backlight determine.
When other condition is certain, by adjusting black Matrix Pattern, and then the glazed area ratio of adjustment RGB subpixel area is for adjusting one of classic method of the white color coordinate of liquid crystal display.In this approach, the glazed area of the sub-pixel that glazed area is maximum is limited to pixel size, technological ability etc. and can not adjusts, the different glazed area ratios of rgb pixel can only be realized by the glazed area reducing other sub-pixel, this reduces the brightness of display.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of liquid crystal display device, can when display panels and backlight constant, the glazed area ratio of different sub-pixels is realized by adjustment reflective graphics, and then different white color coordinate requirements can be met, and the brightness of display panels can be ensured.
For solving the problems of the technologies described above, embodiments of the invention provide technical scheme as follows:
On the one hand, a kind of liquid crystal display device is provided, comprise backlight and display panels, described display panels is formed with multiple pixel cell, each pixel cell comprises at least one sub-pixel, each sub-pixel is divided into echo area and transmission area, and described echo area is formed with the reflective graphics between described display panels and described backlight.
Further, described display panels includes black matrix, and described black matrix is falling into described reflective graphics perpendicular to the projection section on described array base palte direction.
Further, described display panels includes black matrix, and described black matrix is falling into described reflective graphics completely perpendicular to the projection on described array base palte direction.
Further, the material of described reflective graphics is metal.
Further, the material of described reflective graphics is one or more in Mg, Al, Ag and Mo.
Further, described liquid crystal display device also comprises the lower polaroid between described backlight and described display panels, and described reflective graphics is between described lower polaroid and described backlight.
Further, described liquid crystal display device also comprises the lower polaroid between described backlight and described display panels, and described reflective graphics is between described lower polaroid and described display panels.
Further, in same pixel cell, the area of the reflective graphics that different subpixel is corresponding is different.
Further, each pixel cell includes red sub-pixel, green sub-pixels and blue subpixels, and the area of the transmission area of described red sub-pixel, green sub-pixels and blue subpixels is different.
Embodiments of the invention have following beneficial effect:
In such scheme, each sub-pixel is divided into echo area and transmission area, echo area is formed with the reflective graphics between display panels and backlight, this reflective graphics is light tight, therefore can when display panels and backlight constant, realize the glazed area ratio of different sub-pixels by adjusting this reflective graphics, and then different white color coordinate requirements can be met; In addition, the light sent from backlight will be reflected back toward backlight through reflective graphics reflection, some light after the reflection of back light source structure, can be passed through transmission area and enter display panels, thus improve the brightness of display panels.
Accompanying drawing explanation
Fig. 1 is the structural representation of available liquid crystal display panel;
Fig. 2 is than the structural representation of display panels adjusting white color coordinate by the glazed area of adjustment R/G/B subpixel area;
Fig. 3 is the structural representation of embodiment of the present invention display panels.
Reference numeral
The black matrix of 1 upper polarizer 2 color membrane substrates 3
4R/G/B resin 5 oriented layer 6 liquid crystal layer
7 array base palte 8 times polaroid 9 reflective graphics
10 homology figures
Embodiment
For embodiments of the invention will be solved technical matters, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Embodiments of the invention provide a kind of liquid crystal display device, can when display panels and backlight constant, the glazed area ratio of different sub-pixels is realized by adjustment reflective graphics, and then different white color coordinate requirements can be met, and the brightness of display panels can be ensured.
Embodiments provide a kind of liquid crystal display device, comprise backlight and display panels, described display panels is formed with multiple pixel cell, each pixel cell comprises at least one sub-pixel, wherein, each sub-pixel is divided into echo area and transmission area, and described echo area is formed with the reflective graphics between described display panels and described backlight.
In liquid crystal display device of the present invention, each sub-pixel is divided into echo area and transmission area, echo area is formed with the reflective graphics between display panels and backlight, this reflective graphics is light tight, therefore can when display panels and backlight constant, realize the glazed area ratio of different sub-pixels by adjusting this reflective graphics, and then different white color coordinate requirements can be met; In addition, the light sent from backlight will be reflected back toward backlight through reflective graphics reflection, some light after the reflection of back light source structure, can be passed through transmission area and enter display panels, thus improve the brightness of display panels.
Further, described display panels includes black matrix, and described black matrix is falling into described reflective graphics perpendicular to the projection section on described array base palte direction.
Further, described display panels includes black matrix, and described black matrix is falling into described reflective graphics completely perpendicular to the projection on described array base palte direction.
Further, the material of described reflective graphics is metal.The material of described reflective graphics can be one or more in Mg, Al, Ag and Mo.
Further, described liquid crystal display device also comprises the lower polaroid between described backlight and described display panels, and described reflective graphics is between described lower polaroid and described backlight.
Further, described liquid crystal display device also comprises the lower polaroid between described backlight and described display panels, and described reflective graphics is between described lower polaroid and described display panels.
Further, in same pixel cell, the area of the reflective graphics that different subpixel is corresponding is different.
In one specific embodiment, each pixel cell includes red sub-pixel, green sub-pixels and blue subpixels, and the area ratio of the transmission area of described red sub-pixel, green sub-pixels and blue subpixels is 0.61:1:0.49.
In another specific embodiment, each pixel cell includes red sub-pixel, green sub-pixels and blue subpixels, and the area ratio of the transmission area of described red sub-pixel, green sub-pixels and blue subpixels is 0.6:1:0.7.
Below in conjunction with accompanying drawing and specific embodiment, liquid crystal display device of the present invention is introduced further:
Industry liquid crystal display color representation capability specifications is divided into from low to high successively: NTSC (NationalTelevision Standards Committee, National Television Selection) less than 72%, NTSC72%, sRGB100% matching rate (standard Red Green Blue100%matching rate, hereinafter referred to as sRGB100%), Adobe100% matching rate (Adobe100%matching rate, hereinafter referred to as Adobe100%).
Wherein sRGB100% and Adobe100% is high-end product requirement, the chromaticity coordinate of the red primaries of its standard, green primary color and blue primary is as shown in table 1 below, wherein, red primaries is identical two kinds of substandard specifications with blue primary, and green primary color specification is different, it is wider than adopting the green primary color gamut range of sRGB specification to adopt the green primary color of Adobe specification, and the color representation ability of sRGB specification is only equivalent to 74.1% of corresponding Adobe specification.
Table 1
Existing resin bed and backlight can meet sRGB100, but Adobe matching rate also can not reach 100% far away, adopt new green resin for realizing one of Adobe100% main method, but the transmitance of the new green sub-pixels of general satisfaction Adobe100 chromaticity requirements is lower by about 40% than the transmitance of the existing green sub-pixels meeting sRGB.Because the transmitance of green sub-pixels has considerable influence to the white color coordinate that RGB mixes, therefore will cause white color coordinate Wx, Wy deviation is very large.Table 2 is the sRGB display panels after the existing LED-backlit of coupling and the green light color coordinate (Gx of the display panels of green resin by more renewing, Gy, Gz), blue light color coordinate (Bx, By, Bz), red light color coordinate (Rx, Ry, Rz), white color coordinate (Wx, Wy, Wz) colorimetric properties example, as can be seen from Table 2, use the white color coordinate Wx after new green sub-pixels, Wy deviation is very large, namely after the green sub-pixels more renewed, the chromaticity coordinates of RGB arranges and can meet Adobe100%, but white color coordinate and standard deviation large.The fine-tuning white color coordinate of color lump of adjustment white light LEDs, but due to deviation comparatively large, adjustment LED color lump is also difficult to white color coordinates correction to standard.
Table 2
In order to adjust white color coordinate, when the transmitance meeting the green sub-pixels that Adobe requires is difficult to promote, as shown in Figure 2, can by adjusting the width of the black matrix of red sub-pixel and blue subpixels, the glazed area reducing red sub-pixel and blue subpixels realizes the adjustment of white color coordinate.As shown in table 3:
When the glazed area ratio of green sub-pixels, red sub-pixel and blue subpixels is for 1:1:1, the white color coordinate of display panels is (0.303,0.255), with TV, display white color co-ordinated standard (0.28,0.29), (0.313,0.329) gap is larger.
When the glazed area of red sub-pixel and blue subpixels is dropped to 61% and 49% respectively, the white color coordinate of display panels can meet display specification, but the transmitance of display panels have dropped 21% thereupon.
When the glazed area of red sub-pixel and blue subpixels is dropped to 60% and 70% respectively, the white color coordinate of display panels can meet TV specification, but the transmitance of display panels have dropped 19% thereupon.
Table 3
In order to solve the problem, present embodiments provide a kind of liquid crystal display, comprise backlight and display panels as shown in Figure 3, this display panels is formed with multiple pixel cell, each pixel cell comprises at least one sub-pixel, each sub-pixel is divided into echo area and transmission area, the present embodiment is formed with reflection configuration on display panels, this saturating reflection configuration comprises the reflective graphics 9 being formed in echo area and the homology figure 10 being formed in transmission area, saturating reflection configuration is between display panels and backlight, particularly, between lower polaroid 8 and backlight.Reflective graphics 9 can adopt metal to make, and particularly, the material of reflective graphics 9 can be one or more in Mg, Al, Ag and Mo; Homology figure can adopt the transparent resin without color to make.
In order to improve the display brightness of display panels as much as possible, reflective graphics 9 corresponds to black matrix 3 and arranges, black matrix 3 is made to fall into reflective graphics 9 perpendicular to the projection on array base palte 7 direction, preferably, black matrix 3 is falling into reflective graphics 9 completely perpendicular to the projection on array base palte 7 direction.
The present embodiment can when display panels and backlight constant, by changing the size of the reflective graphics of the reflection configuration glazed area ratio that control RGB is corresponding respectively, and then reach the object of adjustment white color coordinate.As shown in table 4, when the area ratio of R/G/B tri-sub-pixels of display panels is 1:1:1, can the glazed area of R/G/B tri-sub-pixels be controlled at 0.61:1:0.49 or 0.6:1:0.7 than respectively by this saturating reflection configuration, can realize white color Coordinate Adjusting to the specification met required by display and TV, and the brightness of display panels compared with prior art, can be improved.
Table 4
As can be seen from Table 4, when the glazed area of red sub-pixel and blue subpixels is dropped to 61% and 49% respectively, the white color coordinate of display panels can meet display specification, and compare the existing method being changed R/G/B glazed area ratio by the black matrix of adjustment, the brightness of display panels is also promoted.
When the glazed area of red sub-pixel and blue subpixels is dropped to 60% and 70% respectively, the white color coordinate of display panels can meet TV specification, and compare the existing method being changed R/G/B glazed area ratio by the black matrix of adjustment, the brightness of display panels is also promoted.
The present embodiment can when display panels and backlight constant, realize the glazed area ratio of different sub-pixels by adjustment reflective graphics, and then different white color coordinate requirements can be met; In addition, the light sent from backlight will be reflected back toward backlight through reflective graphics reflection, some light after the reflection of back light source structure, can be passed through homology figure and enter display panels, thus improve the brightness of display panels.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a liquid crystal display device, comprise backlight and display panels, described display panels is formed with multiple pixel cell, each pixel cell comprises at least one sub-pixel, it is characterized in that, each sub-pixel is divided into echo area and transmission area, and described echo area is formed with the reflective graphics between described display panels and described backlight.
2. liquid crystal display device according to claim 1, is characterized in that, described display panels includes black matrix, and described black matrix is falling into described reflective graphics perpendicular to the projection section on described array base palte direction.
3. liquid crystal display device according to claim 1, is characterized in that, described display panels includes black matrix, and described black matrix is falling into described reflective graphics completely perpendicular to the projection on described array base palte direction.
4. the liquid crystal display device according to any one of claim 1-3, is characterized in that, the material of described reflective graphics is metal.
5. liquid crystal display device according to claim 4, is characterized in that, the material of described reflective graphics is one or more in Mg, Al, Ag and Mo.
6. liquid crystal display device according to claim 1, it is characterized in that, described liquid crystal display device also comprises the lower polaroid between described backlight and described display panels, and described reflective graphics is between described lower polaroid and described backlight.
7. liquid crystal display device according to claim 1, it is characterized in that, described liquid crystal display device also comprises the lower polaroid between described backlight and described display panels, and described reflective graphics is between described lower polaroid and described display panels.
8. liquid crystal display device according to claim 1, is characterized in that, in same pixel cell, the area of the reflective graphics that different subpixel is corresponding is different.
9. liquid crystal display device according to claim 8, it is characterized in that, each pixel cell includes red sub-pixel, green sub-pixels and blue subpixels, and the area of the transmission area of described red sub-pixel, green sub-pixels and blue subpixels is different.
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| CN105278154A (en) * | 2015-11-25 | 2016-01-27 | 武汉华星光电技术有限公司 | Liquid crystal display device and liquid crystal display panel thereof |
| CN107632453A (en) * | 2017-10-31 | 2018-01-26 | 京东方科技集团股份有限公司 | Display panel and manufacture method and display device |
| CN107895567A (en) * | 2017-12-28 | 2018-04-10 | 惠州市华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display device |
| CN108845446A (en) * | 2018-08-28 | 2018-11-20 | 武汉华星光电技术有限公司 | A kind of display |
| CN109031821A (en) * | 2018-07-05 | 2018-12-18 | Oppo广东移动通信有限公司 | Thin-film transistor array base-plate, display screen and electronic equipment |
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| CN104391396B (en) | 2018-01-26 |
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