CN101853644B - Display and color adjustment method for the same - Google Patents
Display and color adjustment method for the same Download PDFInfo
- Publication number
- CN101853644B CN101853644B CN2010102086672A CN201010208667A CN101853644B CN 101853644 B CN101853644 B CN 101853644B CN 2010102086672 A CN2010102086672 A CN 2010102086672A CN 201010208667 A CN201010208667 A CN 201010208667A CN 101853644 B CN101853644 B CN 101853644B
- Authority
- CN
- China
- Prior art keywords
- light source
- display
- skin color
- area
- image signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 21
- 239000000758 substrate Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 5
- 239000012788 optical film Substances 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention relates to a display, which comprises a display panel, a light source module and a skin color detector. The display panel is provided with a plurality of sub-pixel units, and each sub-pixel unit comprises a red sub-pixel unit, a green sub-pixel unit, a blue sub-pixel unit and a white sub-pixel unit. The light source module is arranged on one side of the display panel, and comprises white light sources and yellow light sources distributed among the white light sources. The skin color detector is electrically connected with the display panel, wherein the skin color detector detects the skin color area proportion of the image signal of the display panel.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to a display and a color adjusting method thereof.
[ background of the invention ]
With the progress of technology, people have higher and higher requirements on displays, and the displays are expected to be light, thin, high in image quality and low in power consumption. Especially, for portable displays, low power consumption and high brightness are important concerns. Therefore, RGBW (red, green, blue, and white) displays capable of improving the transmittance of backlight and reducing the consumption of backlight have been developed in recent years. RGBW displays have four color sub-pixel units, red, green, blue, white, etc., and enhance the display brightness by the high transmittance of the white sub-pixel.
However, the red, green and blue sub-pixel elements of an RGBW display are 3/4 the size of the red, green and blue sub-pixel elements of an RGB display. This causes the RGBW display to have the problems of insufficient saturation and insufficient brightness of the skin color image when displaying the skin color image.
[ summary of the invention ]
The invention provides a display and a color adjusting method thereof, which can solve the problems of insufficient saturation and insufficient brightness of a skin color image when the traditional RGBW display displays the skin color image.
The invention provides a display, which comprises a display panel, a light source module and a skin color detector. The display panel is provided with a plurality of sub-pixel units, and each sub-pixel unit comprises a red sub-pixel unit, a green sub-pixel unit, a blue sub-pixel unit and a white sub-pixel unit. The light source module is disposed at one side of the display panel and includes a white light source and a yellow light source distributed in the white light source. The skin color detector is electrically connected with the display panel, wherein the skin color detector detects the skin color area proportion of the image signal of the display panel.
The invention provides a color adjusting method of a display. A display as described above is first provided. The skin tone area ratio of the image signal is then detected by a skin tone detector. And when the skin color area ratio of the image signal is larger than a set value, a white light source and a yellow light source of the light source module are started. And when the skin color area ratio of the image signal is smaller than the set value, the white light source of the light source module is turned on and the yellow light source of the light source module is turned off.
The invention provides a color adjusting method of a display. The display device is provided, wherein the display panel of the display device has a plurality of display areas, the light source module of the display device has a plurality of light-emitting areas, and each display area corresponds to one light-emitting area. The color adjusting method comprises the step of detecting the respective skin color area proportion of the image signal in the display area of the display panel through a skin color detector. And then adjusting the brightness of the yellow light source in the light emitting area corresponding to the display area according to the skin color area proportion and the skin color distribution of the display area.
Based on the above, the yellow light source is additionally disposed in the white light source of the light source module of the display. When the skin color area ratio of the image signal of the display panel is larger than a specific value, the yellow light source in the light source module can be turned on to improve the saturation and brightness of the skin color image.
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
[ description of the drawings ]
Fig. 1 is a schematic diagram of a display according to an embodiment of the invention.
FIG. 2 is a diagram illustrating a method for adjusting color of a display according to an embodiment of the invention.
Fig. 3 is a schematic diagram of a display according to another embodiment of the invention.
[ description of main reference symbols ]
102: display panel
102 a: sub-pixel unit
104: light source module
104 a: white light source
104 b: yellow light source
106: skin color detector
110: white picture compensation circuit
202. 204, 206, 208a, 208b, 210, 212: step (ii) of
302: display area
304: light emitting area
[ detailed description ] embodiments
Fig. 1 is a schematic diagram of a display according to an embodiment of the invention. Referring to fig. 1, the display of the present embodiment includes a display panel 102, a light source module 104, and a skin color detector 106. According to another embodiment, the display further comprises a non-skin tone picture compensation circuit 110.
The display panel 102 has a plurality of sub-pixel units 102a, and the sub-pixel units 102a on the display panel 102 include four sub-pixel units, namely, a red sub-pixel unit, a green sub-pixel unit, a blue sub-pixel unit, and a white sub-pixel unit, so the display panel 102 can be generally referred to as an RGBW display panel. According to the present embodiment, the display panel 102 is a liquid crystal display panel, which includes a lower substrate, an upper substrate, and a liquid crystal layer disposed between the upper substrate and the lower substrate.
Generally, the lower substrate, which may be referred to as an active device array substrate, includes scan lines, data lines, active devices and pixel electrodes. The upper substrate may be referred to as an opposite substrate, which may be a simple blank substrate or a substrate provided with an electrode layer. In addition, the color filter layer can be disposed on the upper substrate or the lower substrate. If the color filter layer is disposed on the upper substrate, the upper substrate may be referred to as a color filter substrate. If the color filter layer is disposed on the lower substrate, the lower substrate may be referred to as a substrate on which the color filter layer is disposed on an array (COA). In this embodiment, the color filter layer includes a red filter pattern, a green filter pattern, a blue filter pattern, and a white filter pattern, and the sub-pixel units corresponding to the four filter patterns are referred to as a red sub-pixel unit, a green sub-pixel unit, a blue sub-pixel unit, and a white sub-pixel unit.
The light source module 104 is disposed at one side of the display panel 102, and the light source module 104 includes a white light source 104a and a yellow light source 104b distributed in the white light source 104 a. The white light source 104a shown in fig. 1 is a Cold Cathode Fluorescent Lamp (CCFL) as an example, and the yellow light source 104b is a Light Emitting Diode (LED) as an example, but the invention is not limited thereto. According to other embodiments of the present invention, the white light source 104a may be other types of white light sources, such as a white Light Emitting Diode (LED) or a white light source formed by mixing red, green and blue LEDs. The yellow light source 104b may also be a cold cathode fluorescent lamp or other light source. In addition, according to a preferred embodiment of the present invention, the yellow light source 104b can be a brightness-adjustable yellow light source.
In addition, the light source module 104 further includes an optical film set, a frame, a driving circuit (not shown), and the like. Generally, the optical film set is disposed above the white light source 104a and the yellow light source 104 b. The frame is used to fix the white light source 104a, the yellow light source 104b and the optical film set. The driving circuit is electrically connected to the white light source 104a and the yellow light source 104b to drive and control the light sources to be turned on and off.
The skin color detector 106 is electrically connected to the display panel 102. In more detail, the skin color detector 106 is electrically connected to the display panel 102 and the light source module 104. The skin tone detector 106 mainly detects a skin tone area ratio of the image signal of the display panel 102. The operation of the skin tone detector 106 will be described in detail later.
According to an embodiment of the present invention, the display further includes a non-skin color image compensation circuit 110 electrically connected to the display panel 102 and the light source module 104. The non-skin color frame compensation circuit 110 can compensate for non-skin color regions of the video signal of the display panel 102.
Fig. 2 is a schematic diagram of a color adjustment method for a display according to an embodiment of the invention, which is applied to the display of fig. 1.
Referring to fig. 1 and fig. 2, an image signal of the display panel 102 is first generated (step 202). More specifically, the image signal is generated by a driving component or a driving device of the display. Then, the image signal is outputted from the driving component (step 206). Then, the image is inputted into the display panel 102 (step 210) to make the display panel 102 display the image. After the image signal is generated in step 202, the image signal is simultaneously detected by the skin tone detector 106 (step 204). After detecting the image signal, the skin color detector 106 calculates the skin color area ratio of the detected image signal according to the detection result. Then, according to the calculated skin color area ratio, the white light source 104a and the yellow light source 104b in the light source module 104 can be turned on/off (steps 208a/208 b). When the light source module 104 is turned on, light source mixing can be performed (step 212) to serve as a surface light source provided to the display panel 102.
More specifically, in the above step 204 and steps 208a/208b, when the skin color area ratio of the image signal detected in the step 204 is greater than the set value, the white light source 104a in the light source module 104 is turned on (step 208a), and the yellow light source 104b in the light source module 104 is turned on at the same time (step 208 b). The above-mentioned set value may be, for example, 5% to 80%. In this way, the light source generated by the light mixture of the white light source 104a and the yellow light source 104b in the light source module 104 is used as the surface light source provided to the display panel 102. When the ratio of the skin color area of the image signal is larger than the set value, the skin color area of the image signal occupies more area of the image. Then, the yellow light source 104b in the light source 104 module is turned on, so that the saturation and brightness of the skin color image can be improved.
Conversely, when the skin color area ratio of the image signal detected in step 204 is smaller than the above-mentioned set value, only the white light source 104a in the light source module 104 is turned on (step 208a), and the yellow light source 104b in the light source module 104 is turned off (step 208 b). In other words, the light source module 104 provides a white light source to the display panel 102.
In addition, according to an embodiment of the present invention, when the skin color area ratio of the image signal is greater than the set value and the white light source 104a and the yellow light source 104b of the light source module 104 are turned on, the brightness of the yellow light source 104b can be adjusted according to the skin color area ratio of the image signal. In other words, when the skin color area ratio of the image signal is higher, the brightness of the yellow light source 104b can be increased accordingly; when the skin color area ratio of the image signal is lower, the brightness of the yellow light source 104b can be adjusted to be lower.
In addition, according to another embodiment, the brightness of the yellow light source 104b can be further determined according to the skin color distribution (e.g., the shade of skin color) of the image signal. For example, when the image signal is displaying a yellow image, the brightness of the yellow light source 104b may be relatively high; when the image signal is displaying a caucasian image, the brightness of the yellow light source 104b may be relatively low.
Furthermore, according to an embodiment of the present invention, if the skin color area ratio of the image signal is greater than the set value and the yellow light source 104b in the light source module 104 is turned on, the non-skin color image compensation circuit 110 may be further used to perform non-skin color compensation on the non-skin color area in the image signal.
In the above embodiment, the yellow light source 104b in the light source module 104 is turned on or off by determining the skin color area ratio of the image signal. According to another embodiment of the present invention, the display panel 102 and the light source module 104 can be divided into regions, and the brightness of the yellow light source 104b in each region can be adjusted according to the area ratio and color distribution of the skin color of the image signal in each region, as described in detail below.
Referring to fig. 3, the display panel 102 and the light source module 104 of fig. 3 have already been described in fig. 1 and corresponding paragraphs, and are not repeated herein. The embodiment is different from the embodiment of fig. 1 in that the display panel 102 can be further divided into a plurality of display regions 302, and the light source module 104 is further divided into a plurality of light emitting regions 304, and each display region 302 is disposed corresponding to one light emitting region 304. In other words, each display area 302 is aligned with one light emitting area 304. Here, the size or area of the display area 302 and the light emitting area 304 is not limited in the present invention, that is, one display area 302 is not limited to include several pixel units 102a, and one light emitting area 304 is not limited to include several white light sources 104a and yellow light sources 104 b. The size or area of the display area 302 and the light emitting area 304 can be designed by the user according to the actual product. That is, the user can design the number of the pixel units 102a included in one display region 302 and the number of the white light sources 104a and the yellow light sources 104b in one light emitting region 304 according to the actual product requirement. Generally, the more the number of pixel units 102a in one display region 302 and the more the number of white light sources 104a and yellow light sources 104b in one light-emitting region 304, the finer the color adjustment.
After the display panel 102 and the light source module 104 are partitioned, the skin color detector 106 detects the skin color area ratio and the color distribution of the image signal in the display area 302 of the display panel 100. Then, the brightness of the yellow light source 104b in the corresponding light-emitting region 304 can be adjusted according to the skin color area ratio and the color distribution in each display region 302 of the display panel 102.
More specifically, in each display area 302 of the display panel 102, if the skin color area ratio is larger than the set value, the white light source 104a and the yellow light source 104b in the light emitting area 304 corresponding to the display area 302 are turned on. The above-mentioned set value may be, for example, 5% to 80%. In this way, the light source generated after the white light source 104a and the yellow light source 104b corresponding to the light emitting region 304 of the display region 302 are mixed is used as the surface light source of the display region 302. In other words, by turning on the yellow light source 104b of the light emitting region 304 corresponding to the display region 302, the saturation and brightness of the skin color image in the display region 302 can be improved.
Similarly, in each display area 302 of the display panel 102, if the skin color area ratio is smaller than the above-mentioned set value, the white light source 104a in the light-emitting area 304 corresponding to the display area 302 is turned on and the yellow light source 104b in the light-emitting area 304 corresponding to the display area 302 is turned off. At this time, the brightness of the yellow light source 104b in the light emitting region 304 corresponding to the display region 302 is 0.
In addition, according to an embodiment of the present invention, in each display area 302, if the skin color area ratio is larger than the set value, when the white light source 104a and the yellow light source 104b in the corresponding light emitting area 304 are turned on, the brightness of the yellow light source 104b in the corresponding light emitting area 304 can be further adjusted according to the skin color area ratio in each display area 302.
In addition, according to another embodiment, the brightness of the yellow light source 104b can be further determined according to the distribution of skin color (e.g. the shade of skin color) in each display area 302. For example, when the display area 302 displays the image of a yellow person, the brightness of the yellow light source 104b in the light emitting area 304 corresponding to the display area 302 may be relatively high; when displaying the image of a caucasian person in the display area 302, the brightness of the yellow light source 104b in the light-emitting area 304 corresponding to the display area 302 may be relatively low.
According to an embodiment of the present invention, if the skin color area ratio of the display area 302 is larger than the above-mentioned set value, the non-skin color image compensation circuit 110 may be further utilized to perform non-skin color compensation on the non-skin color area of the display area 302 when the corresponding white light source 104a and yellow light source 104b in the light-emitting area 304 are turned on.
As described above, since the yellow light source is additionally disposed in the white light source of the light source module of the display, when the skin color area ratio of the image signal of the display panel is greater than a specific value, the yellow light source in the light source module can be turned on to improve the saturation and brightness of the skin color image.
In addition, the display panel and the light source module can be further partitioned to adjust the color of the picture of the display panel in a partition mode. Furthermore, the brightness of the yellow light source or the yellow light source in each partition can be further adjusted, so that the color adjustment of the display surface can be more detailed.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (16)
1. A display, comprising:
a display panel having a plurality of sub-pixel units, wherein the sub-pixel units include a red sub-pixel unit, a green sub-pixel unit, a blue sub-pixel unit and a white sub-pixel unit;
the light source module is arranged on one side of the display panel and comprises a white light source and a yellow light source distributed in the white light source;
a skin color detector electrically connected to the display panel, wherein the skin color detector detects a skin color area ratio of an image signal of the display panel; wherein,
and when the skin color area ratio of the image signal of the display panel is larger than a specific value, starting a yellow light source in the light source module.
2. The display of claim 1, wherein the display panel has a plurality of display regions, the light source module has a plurality of light-emitting regions, and each display region corresponds to one light-emitting region.
3. The display of claim 2 wherein the skin tone detector detects a respective skin tone area ratio of the image signal in the display area.
4. The display of claim 1, wherein the yellow light source is a brightness-adjustable yellow light source.
5. The display of claim 1, further comprising a non-skin tone picture compensation circuit electrically connected to the display panel and the light source module.
6. A method of color adjustment of a display, comprising:
providing a display according to claim 1; and
when the skin color area ratio of the image signal is larger than a set value, the white light source and the yellow light source of the light source module are turned on,
when the skin color area ratio of the image signal is smaller than the set value, the white light source of the light source module is turned on and the yellow light source of the light source module is turned off.
7. The method as claimed in claim 6, wherein the set value of the skin color area ratio of the video signal is 5% to 80%.
8. The method of claim 6, wherein when the skin color area ratio of the image signal is greater than the predetermined value and the white light source and the yellow light source of the light source module are turned on, the brightness of the yellow light source is adjusted according to the skin color area ratio of the image signal.
9. The method of claim 6, wherein when the ratio of the skin color area of the image signal is greater than the predetermined value and the white light source and the yellow light source of the light source module are turned on, the brightness of the yellow light source is adjusted according to the skin color distribution of the image signal.
10. The method of claim 6, further comprising compensating a non-skin color region of the image signal by a non-skin color image compensation circuit when the skin color area ratio of the image signal is greater than the predetermined value and the white light source and the yellow light source of the light source module are turned on.
11. A method for adjusting color of a display, according to claim 1, wherein the display panel has a plurality of display regions, the light source module has a plurality of light-emitting regions, and each display region corresponds to one light-emitting region, the method comprising:
detecting respective skin color area ratios of the image signals in the display area of the display panel through the skin color detector; and
and adjusting the brightness of a yellow light source in the light emitting area corresponding to the display area according to the skin color area ratio and the skin color distribution in the display area.
12. The method for adjusting color of a display according to claim 11, wherein:
in the display area, if the skin color area ratio is larger than a set value, the white light source and the yellow light source of the light emitting area corresponding to the display area are turned on,
in the display area, if the skin color area ratio is smaller than the set value, the white light source of the light emitting area corresponding to the display area is turned on and the yellow light source of the light emitting area corresponding to the display area is turned off.
13. The method of claim 12, wherein the setting value is 5% to 80%.
14. The method of claim 12, wherein if the skin color area ratio of the display area is greater than the predetermined value, the white light source and the yellow light source of the light emitting area corresponding to the display area are turned on, and the more skin color area ratios of the display area, the higher the brightness of the corresponding yellow light source.
15. The method of claim 12, wherein the brightness of the yellow light source is adjusted according to the distribution of skin color in the display area when the white light source and the yellow light source corresponding to the light-emitting area of the display area are turned on if the skin color area ratio is larger than the predetermined value.
16. The method of claim 12, further comprising compensating a non-skin color region of the image signal with a non-skin color image compensation circuit when turning on the white light source and the yellow light source corresponding to the light emitting region of the display region if the skin color area ratio is larger than the predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102086672A CN101853644B (en) | 2010-06-13 | 2010-06-13 | Display and color adjustment method for the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102086672A CN101853644B (en) | 2010-06-13 | 2010-06-13 | Display and color adjustment method for the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101853644A CN101853644A (en) | 2010-10-06 |
| CN101853644B true CN101853644B (en) | 2012-04-11 |
Family
ID=42805103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102086672A Active CN101853644B (en) | 2010-06-13 | 2010-06-13 | Display and color adjustment method for the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101853644B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8767002B2 (en) * | 2011-01-31 | 2014-07-01 | Marvell World Trade Ltd. | Systems and methods for performing color adjustment of pixels on a color display |
| CN106454303B (en) * | 2016-10-27 | 2018-07-13 | 青岛海信电器股份有限公司 | RGBW image processing methods and device |
| CN109509435B (en) | 2017-09-14 | 2020-12-04 | 元太科技工业股份有限公司 | Display device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3136850B2 (en) * | 1993-07-28 | 2001-02-19 | 松下電器産業株式会社 | Video signal gradation correction device |
| JP2009165036A (en) * | 2008-01-09 | 2009-07-23 | Sharp Corp | Image processor and computer program |
| WO2010061493A1 (en) * | 2008-11-27 | 2010-06-03 | パナソニック株式会社 | Video processing apparatus and video processing method |
| US20100271297A1 (en) * | 2009-04-27 | 2010-10-28 | Shoei-Lai Chen | Non-contact touchpad apparatus and method for operating the same |
-
2010
- 2010-06-13 CN CN2010102086672A patent/CN101853644B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101853644A (en) | 2010-10-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7911442B2 (en) | Dynamic color gamut of LED backlight | |
| TWI390495B (en) | Color sequential backlight liquid crystal displays and related methods | |
| US9330610B2 (en) | Liquid crystal display device including a backlight unit employing a light source and method for driving the same | |
| US8692759B2 (en) | Method for driving a light source and light source apparatus for performing the method | |
| US20100321414A1 (en) | Display device | |
| US7889216B2 (en) | Image display device, electronic apparatus, and pixel location determining method | |
| JP2004191490A (en) | Liquid crystal display device | |
| US20090051637A1 (en) | Display devices | |
| JPWO2009101727A1 (en) | Display device | |
| CN1928642A (en) | Electro-optical device and electronic apparatus | |
| JP2014197194A (en) | Video and content controlled backlight | |
| US20100141871A1 (en) | Liquid crystal display | |
| WO2007066435A1 (en) | Illumination device and display apparatus provided with the same | |
| US20090058792A1 (en) | Backlight unit, liquid crystal display device including the same, and localized dimming method thereof | |
| US20110234478A1 (en) | Liquid crystal display device | |
| WO2010021184A1 (en) | Display device | |
| US10332457B2 (en) | Display apparatus and method of driving the same | |
| KR20170047787A (en) | Backlight unit and display apparatus including the same | |
| CN101853644B (en) | Display and color adjustment method for the same | |
| JP2009229791A (en) | Liquid crystal display | |
| US20150179111A1 (en) | Liquid crystal display device as well as backlight source and dimming method for the same | |
| TWI426498B (en) | Display device and color adjustment method for display device | |
| WO2013073428A1 (en) | Display device | |
| Ohtsuki et al. | 40.5 L: Late‐News Paper: 18.1‐inch XGA TFT‐LCD with Wide Color Reproduction using High Power LED‐Backlighting | |
| JP2006163047A (en) | Liquid crystal display apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |