CN106782382A - A kind of display panel and display device - Google Patents
A kind of display panel and display device Download PDFInfo
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- CN106782382A CN106782382A CN201611236737.9A CN201611236737A CN106782382A CN 106782382 A CN106782382 A CN 106782382A CN 201611236737 A CN201611236737 A CN 201611236737A CN 106782382 A CN106782382 A CN 106782382A
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- light modulation
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
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- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a kind of display panel and display device.The method includes：The light modulation layer and display layer being stacked；Detection circuit, the Luminance Distribution situation shown in detection display layer；Control circuit, adjusts the light percent of pass distribution of light modulation layer, makes it corresponding with Luminance Distribution situation, to cause that the overall brightness of display panel is evenly distributed, so as to improve the uniformity of the display panel display brightness.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of display panel and display device.
Background technology
With the development that small-medium size Electronic Display Panel industry is maked rapid progress, electronic product of the people to small-medium size
The requirement of the quality and Consumer's Experience of (such as mobile phone, flat board) also more and more higher, but with the variation of electronic product function, its
Power consumption is also increasing, and stand-by time is also shorter and shorter.In order to solve this problem, four colour pattern pixels design (RGBW) technology quilt
Propose.RGBW technologies are consumed due to increased W sub-pixels in original rgb pixel so as to greatly save backlight power.
But RGBW technologies have also been introduced new problem, as shown in Figure 1 and Figure 2, Fig. 1 is that RGB display panel pixels arrangement one is real
The structural representation of example is applied, Fig. 2 is the structural representation that RGBW display panel pixels arrange an embodiment.12 is pure red in Fig. 1
Color viewing area (11 is red sub-pixel), 13 are ninsolid color viewing area；22 is that (21 is red sub- picture for pure red viewing area in Fig. 2
Element), 23 be ninsolid color viewing area.It can be seen that the brightness of pure red viewing area 12 is the bright of ninsolid color viewing area 13
The 1/3 of degree, and the brightness of pure red viewing area 22 is the 1/4 of the brightness of ninsolid color viewing area 23, so by contrast, RGBW shows
Show that the pure color picture of Display panel can be partially dark many relative to ninsolid color picture, so as to cause whole RGBW display panels to show bright
Degree uniformity reduction.
The content of the invention
The present invention solves the technical problem of a kind of display panel and display device is provided, shown with improving display panel
Show the uniformity of brightness.
In order to solve the above technical problems, the invention provides a kind of display panel, the display panel includes：It is stacked
Light modulation layer and display layer；Detection circuit, detects the Luminance Distribution situation shown in the display layer；Control circuit, adjusts institute
The light percent of pass distribution of light modulation layer is stated, makes it corresponding with the Luminance Distribution situation, to cause the totality of the display panel
Illuminance distribution.
Wherein, the light modulation layer further includes tft array substrate, liquid crystal layer and the public electrode being sequentially laminated；It is described
Tft array substrate and the public electrode are used to control the liquid crystal of the liquid crystal layer to the saturating of the backlight into the display panel
Cross rate.
Wherein, the tft array substrate further includes that the TFT i.e. ranks of matrix arrangement are arranged and are respectively coupled to described
The controlling grid scan line of TFT, data scanning line and pixel electrode.
Wherein, the TFT of the matrix arrangement is fixed or dynamic be divided into respective independent control at least two groups, and
The light modulation subregion of described group of size and the display layer is set according to light modulation fineness；Described group with the display layer
Light modulation subregion is corresponded.
Wherein, the TFT of the matrix arrangement is corresponded with the light modulation subregion of the display layer, and the light modulation point
Area is set according to light modulation fineness.
Wherein, the TFT is controlled by gated sweep signal conduction by scan data signal and common electrode signal
Transmitance of the liquid crystal of the liquid crystal layer to the backlight into the light modulation subregion corresponding with the TFT.
Wherein, the Luminance Distribution situation for being shown in display layer described in the detection electric circuit inspection includes：
View data to being shown in the display layer carries out subregion detecting；The subregion of described image data and the display
The light modulation subregion of layer is corresponded；
The control circuit judges each according to the detection circuit to the testing result of each described image data partition
Whether the light modulation subregion is pure color viewing area and judges whether each light modulation subregion is white displays area；If the light modulation
Subregion is pure color viewing area, then produce the first control signal give light modulation the subregion corresponding TFT, the TFT according to
The transmitance that first control signal adjusts backlight of the liquid crystal of the liquid crystal layer to entering the light modulation subregion is first saturating
Cross rate；If the light modulation subregion is white displays area, the second control signal is produced to give the light modulation subregion corresponding described
TFT, the TFT adjust the liquid crystal of the liquid crystal layer to entering the backlight for dimming subregion according to second control signal
Transmitance is the second transmitance；Wherein, first transmitance is more than second transmitance.
Wherein, the pure color viewing area is the viewing area that pure color data exceed first threshold；
The white displays area is the viewing area that white data exceedes Second Threshold.
Wherein, the display panel is RGBW display panels.
In order to solve the above technical problems, present invention also offers a kind of display device, the display device includes：Described
Display panel and backlight module；The backlight module is used to provide backlight to the display panel；The control circuit is further
The backlight module is controlled to provide the backlight to the display panel and control the display layer display described image data.
The beneficial effects of the invention are as follows：Prior art is different from, a kind of display panel of the invention and display device include layer
The folded light modulation layer for setting and display layer；The display panel by detecting the Luminance Distribution situation shown in electric circuit inspection display layer,
And using controlling circuit to be distributed according to the light percent of pass that testing result adjusts the light modulation layer, make it with the Luminance Distribution situation pair
Should, to cause that the overall brightness of the display panel is evenly distributed, so as to improve the uniformity of the display panel display brightness.
Brief description of the drawings
Fig. 1 is the structural representation that RGB display panel pixels arrange an embodiment；
Fig. 2 is the structural representation that RGBW display panel pixels arrange an embodiment；
Fig. 3 is the structural representation of the embodiment of display panel of the present invention；
Fig. 4 is the tft array substrate of Fig. 3 embodiments and the structural representation of the embodiment of display layer one；
Fig. 5 is the structural representation of another embodiment of tft array substrate and display layer of Fig. 3 embodiments；
Fig. 6 is the structural representation of the embodiment of display device of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on this
Embodiment in invention, it is every other that those of ordinary skill in the art are obtained under the premise of performing creative labour is not made
Embodiment, belongs to the scope of protection of the invention.
Refering to Fig. 3, Fig. 3 is the structural representation of the embodiment of display panel of the present invention.The present embodiment includes being stacked
Light modulation layer 31, display layer 32, detection circuit 33 and control circuit 34；Detection circuit 33 is used to detect what is shown in display layer 32
Luminance Distribution situation；Control circuit 34 is used to adjust the light percent of pass distribution of light modulation layer 31, makes it with the Luminance Distribution situation
Correspondence, to cause that the overall brightness of the display panel is evenly distributed.
In an application scenarios, light modulation layer 31 is arranged between display layer 32 and backlight module 35, for adjusting backlight
The backlight that module 35 is provided enters percent of pass distribution (as shown in Figure 3) of display layer 32.In other application scene, light modulation layer 31
Side of the display layer 32 away from backlight module 35 can be arranged at, the brightness of the display picture of display layer 32 can equally be adjusted
It is whole so that the display brightness of display panel is evenly.
Prior art is different from, the present embodiment is utilized and controls circuit 34 to lead to according to the light that testing result adjusts light modulation layer 31
Rate distribution is crossed, makes it corresponding with the Luminance Distribution situation of display layer 32, to cause that the overall brightness of the display panel is evenly distributed,
So as to improve the uniformity of the display panel display brightness.
In another application scenarios, detection circuit 33 can be arranged on same driving layer with control circuit 34, the drive
Dynamic layer can be set with light modulation layer 31 or display layer 32 with layer.
Alternatively, the light modulation layer 31 of the present embodiment further includes tft array substrate 311, the liquid crystal layer 312 being sequentially laminated
And public electrode 313；Tft array substrate 311 and public electrode 313 are used to control the liquid crystal of liquid crystal layer 312 to entering display surface
The transmitance of the backlight of plate.Specifically, can change to applying different voltage differences between tft array substrate 311 and public electrode 313
Become the deflection angle of the liquid crystal of liquid crystal layer 312, so as to change the transmitance into the backlight of display panel.
Alternatively, the light modulation layer 31 of the present embodiment still further comprises polaroid 314, and polaroid 314 is located at backlight module
Between 35 and tft array substrate 311, for even back to be incident upon into tft array substrate 311, the uniform of backlight is improved
Property, and then improve the uniformity of the display brightness of display panel.
In an application scenarios, display layer 32 further includes polaroid 321 and 326, colored optical filtering substrates 322, coloured silk
Colo(u)r filter 323, liquid crystal layer 324, tft array substrate 325 etc., the composition and work of display layer 32 and conventional liquid crystal display panel
Make principle identical, do not described here.
Alternatively, the present embodiment display panel is RGBW display panels.RGBW technologies in original rgb pixel due to increasing
W sub-pixels are added, so as to greatly save backlight power consumption.
Alternatively, refering to Fig. 4, Fig. 4 is the structural representation of the tft array substrate and the embodiment of display layer one of Fig. 3 embodiments
Figure.The tft array substrate 311 of the present embodiment includes TFT41 and the ranks arrangement of matrix arrangement and is respectively coupled to the grid of TFT41
Scan line 42, data scanning line 43 and pixel electrode 44.
Alternatively, the controlling grid scan line 42 of the present embodiment provides gated sweep signal turns on TFT41, data scanning line 43
There is provided scan data signal to control the voltage of pixel electrode 44, the voltage difference control between pixel electrode 44 and public electrode 313
The deflection angle of liquid crystal in liquid crystal layer 312, so as to adjust transmitance of the liquid crystal layer 312 to backlight.Wherein, said scanning signals are
Voltage signal.
Alternatively, the TFT41 of the matrix arrangement of the present embodiment is fixed or dynamic is divided at least the two of respective independent control
Individual group 45 (as shown in fig. 4 a), and the size of group 45 is fine according to light modulation with the light modulation subregion 46 (as shown in Figure 4 b) of display layer 32
Spend to set；Group 45 is corresponded with light modulation subregion 46.The present embodiment has the TFT41 totally 18 of matrix arrangement, according to light modulation
18 TFT41 are divided into 9 groups 45 by fineness, and now the viewing area in display layer 32 is also divided into 9 light modulation subregions 46 accordingly,
Each light modulation one group 45 of correspondence of subregion 46, each group 45 includes 2 TFT41.
Alternatively, refering to Fig. 5, Fig. 5 is that the structure of another embodiment of tft array substrate and display layer of Fig. 3 embodiments is shown
It is intended to.The TFT51 (as shown in Figure 5 a) of the matrix arrangement of the present embodiment and the light modulation subregion 52 (as shown in Figure 5 b) of display layer 32
Correspond (as described in Figure 5), i.e., one TFT51 is corresponding with a light modulation subregion 52, and Regionalization basis light modulation fineness is come
Set.There are 9 TFT51 in Fig. 5 embodiments, that is to say, that the regulation to the Luminance Distribution of whole display layer 32 is by 9 tune
Light subregion 52 is adjusted.
The light modulation subregion of above-mentioned TFT packets or display layer is all according to the fineness of the Luminance Distribution regulation to whole display layer
To set, if the regulation to the Luminance Distribution of display layer is finer, the subregion to TFT packets and display layer is thinner.
Alternatively, Luminance Distribution situation (other realities for being shown in the detection detection display layer 32 of circuit 33 of above-described embodiment
The detection method for applying the Luminance Distribution situation to display layer of example is identical) include：
View data to being shown in display layer 32 carries out subregion detecting；The subregion of the view data and the tune of display layer 32
Light subregion 52 is corresponded；
Control circuit 34 judges each light modulation subregion according to detection circuit 33 to the testing result of each view data subregion
52 whether be pure color viewing area and judge it is each dim subregion 52 whether be white displays area；If light modulation subregion 52 shows for pure color
Area, then produce the first control signal to give light modulation subregion 52 corresponding TFT51, TFT51 and adjust liquid according to first control signal
The transmitance of backlight of the liquid crystal of crystal layer 312 to entering light modulation subregion 52 is the first transmitance；If light modulation subregion 52 is aobvious for white
Show area, then produce the second control signal to give light modulation subregion 52 corresponding TFT51, TFT52 and adjusted according to second control signal
The transmitance of backlight of the liquid crystal of liquid crystal layer 312 to entering light modulation subregion 52 is the second transmitance (adjustment structure of the transmitance
And operation principle is described in the above-described embodiments)；Wherein, first transmitance is more than second transmitance.
Alternatively, the pure color viewing area of the present embodiment is the viewing area that pure color data exceed first threshold；White displays area
Exceed the viewing area of Second Threshold for white data.
In an application scenarios, the size of above-mentioned first transmitance and the second transmitance, above-mentioned first threshold and second
The size of threshold value can be set according to the specific requirement of the Luminance Distribution situation to display layer 32.
Refering to Fig. 6, Fig. 6 is the structural representation of the embodiment of display device of the present invention.The display device includes：Above-mentioned reality
Apply the display panel 61 and backlight module 62 of example；Backlight module 62 is used to provide backlight to display panel 61；Control circuit 612 enters
One step control backlight module 62 provides backlight to display panel 61 and the control display image data of display layer 611.
Structure and working principle to display panel in above-mentioned display panel embodiment has carried out detailed narration,
It is not repeated herein.
Prior art is different from, the present embodiment can adjust the back of the body that backlight module is provided by the light modulation layer in display panel
The light percent of pass that light enters the display panel is distributed, to cause that the overall brightness of the display panel is evenly distributed, so as to improve
The uniformity of the display panel display brightness.
Embodiments of the present invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every using this
Equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, is included within the scope of the present invention.
Claims (10)
1. a kind of display panel, it is characterised in that including：
The light modulation layer and display layer being stacked；
Detection circuit, detects the Luminance Distribution situation shown in the display layer；
Control circuit, adjusts the light percent of pass distribution of the light modulation layer, makes it corresponding with the Luminance Distribution situation, to cause
The overall brightness of the display panel is evenly distributed.
2. display panel according to claim 1, it is characterised in that
The light modulation layer further includes tft array substrate, liquid crystal layer and the public electrode being sequentially laminated；
The tft array substrate and the public electrode are used to control the liquid crystal of the liquid crystal layer to entering the display panel
The transmitance of backlight.
3. display panel according to claim 2, it is characterised in that
The tft array substrate further includes that the TFT of matrix arrangement i.e. ranks are arranged and are respectively coupled to the grid of the TFT and sweeps
Retouch line, data scanning line and pixel electrode.
4. display panel according to claim 3, it is characterised in that
The TFT of the matrix arrangement is fixed or dynamic be divided into respective independent control at least two groups, and described group
The light modulation subregion of size and the display layer is set according to light modulation fineness；Described group with the light modulation of the display layer
Subregion is corresponded.
5. display panel according to claim 3, it is characterised in that
The TFT of the matrix arrangement is corresponded with the light modulation subregion of the display layer, and the light modulation Regionalization basis are adjusted
Light fineness is set.
6. the display panel according to any one of claim 1 to 5, it is characterised in that
The TFT controls the liquid crystal by scan data signal and common electrode signal by gated sweep signal conduction
Transmitance of the liquid crystal of layer to the backlight into the light modulation subregion corresponding with the TFT.
7. display panel according to claim 6, it is characterised in that
The Luminance Distribution situation shown in display layer described in the detection electric circuit inspection includes：
View data to being shown in the display layer carries out subregion detecting；The subregion of described image data and the display layer
The light modulation subregion is corresponded；
It is described control circuit according to it is described detection circuit the testing result of each described image data partition is judged it is each described in
Whether light modulation subregion is pure color viewing area and judges whether each light modulation subregion is white displays area；If the light modulation subregion
It is pure color viewing area, then produces the first control signal to give the corresponding TFT of the light modulation subregion, the TFT is according to
The liquid crystal that first control signal adjusts the liquid crystal layer is the first transmitance to entering the transmitance of the backlight of the light modulation subregion；
If the light modulation subregion is white displays area, the second control signal is produced to give the corresponding TFT of the light modulation subregion, institute
State transmitance of the liquid crystal to the backlight into the light modulation subregion that TFT adjusts the liquid crystal layer according to second control signal
It is the second transmitance；
Wherein, first transmitance is more than second transmitance.
8. display panel according to claim 7, it is characterised in that
The pure color viewing area is the viewing area that pure color data exceed first threshold；
The white displays area is the viewing area that white data exceedes Second Threshold.
9. the display panel according to any one of claim 1 to 8, it is characterised in that
The display panel is RGBW display panels.
10. a kind of display device, it is characterised in that including：
Display panel and backlight module described in any one of claim 1 to 9；
The backlight module is used to provide backlight to the display panel；
The control circuit further controls the backlight module to provide the backlight to the display panel and control described aobvious
Show that layer shows described image data.
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| CN201611236737.9A CN106782382A (en) | 2016-12-28 | 2016-12-28 | A kind of display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611236737.9A CN106782382A (en) | 2016-12-28 | 2016-12-28 | A kind of display panel and display device |
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| CN201611236737.9A Pending CN106782382A (en) | 2016-12-28 | 2016-12-28 | A kind of display panel and display device |
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| CN107632445A (en) * | 2017-10-30 | 2018-01-26 | 上海中航光电子有限公司 | A kind of display panel and display device |
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| CN110570824A (en) * | 2019-08-06 | 2019-12-13 | 深圳市华星光电技术有限公司 | Liquid crystal display, image display method thereof and backlight control device |
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