CN210896554U - Display device - Google Patents
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- CN210896554U CN210896554U CN201921661293.2U CN201921661293U CN210896554U CN 210896554 U CN210896554 U CN 210896554U CN 201921661293 U CN201921661293 U CN 201921661293U CN 210896554 U CN210896554 U CN 210896554U
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Abstract
The utility model discloses a display device, including display part, control part and compensation part, the control part with compensation part all with the display part electricity is connected, the control part be used for to the first input image data of display part input, the display part is used for detecting first input image data, and according to first input image data constitution is examined luminance, works as when being examined the luminance difference value of luminance and standard luminance and surpassing the standard value, compensation part is used for according to luminance difference value generates compensation pixel. The utility model discloses a mode of compensation pixel improves display device's quality, can also control manufacturing cost.
Description
Technical Field
The utility model belongs to the technical field of the display, concretely relates to display device.
Background
In the display device, pixels have specific variations due to foreign substances generated in the manufacturing process and manufacturing process variations, and further, luminance variations occur, and/or variations in threshold voltages and degrees of channel movement of transistors located in the pixels due to driving and/or luminance variations occur due to thermal conduction of light emitting elements, and finally, image quality distortion including speckle occurs in a picture.
SUMMERY OF THE UTILITY MODEL
One of the purposes of the utility model lies in: aiming at the defects of the prior art, the display device is provided, the quality of the display device is improved in a pixel compensation mode, and the production cost can be controlled.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a display device comprises a display part, a control part and a compensation part, wherein the control part and the compensation part
The display unit is electrically connected with the control unit, the control unit is used for inputting first input image data to the display unit, the display unit is used for detecting the first input image data and forming detected luminance according to the first input image data, and the compensation unit is used for generating compensation pixels according to the luminance difference value when the luminance difference value between the detected luminance and standard luminance exceeds a standard value.
As an improvement of the display device of the present invention, the number of the display portions is plural, and plural the display portions are connected to each other.
As an improvement of the display device of the present invention, the control unit includes a data correction unit for transmitting luminance correction data to the display unit.
As an improvement of the display device of the present invention, the compensation portion includes an encoder, a memory, and a decoder, the encoder includes a compensation data generation portion and a compression portion, the decoder,
The compensation data generation unit and the compression unit are both connected to the memory.
As an improvement of the display device of the present invention, the display device further includes a driver, the driver includes a scan driver and a source driver, and the scan driver and the source driver are both connected to the display portion.
The beneficial effects of the utility model reside in that, the utility model discloses a display part, control part and compensation portion, the control part with compensation portion all with the display part electricity is connected, the control part be used for to the first input image data of display part input, the display part is used for detecting first input image data, and according to first input image data constitutes and is examined luminance, works as when being examined the luminance difference value of luminance and standard luminance and surpassing the standard value, compensation portion is used for the basis luminance difference value generates the compensation pixel. The utility model discloses a mode of compensation pixel improves display device's quality, can also control manufacturing cost.
Drawings
Fig. 1 is a schematic structural diagram of a display device according to embodiment 1 of the present invention; fig. 2 is a schematic structural view of the compensation part of the present invention; fig. 3 is a schematic structural diagram of a display device according to embodiment 2 of the present invention; fig. 4 is a flow chart of luminance adjustment of the display device according to the present invention; FIG. 5 is a flowchart illustrating the compensation pixel output process of the present invention; FIG. 6 is a diagram illustrating a compensated pixel output method of FIG. 5; FIG. 7 is a flowchart illustrating the compensation pixel output process of the present invention; FIG. 8 is a luminance distribution diagram of a test image;
wherein: 110-a display section; 128-a control section; 126-a compensation section; 1261-an encoder; 1267-memory; 1269-decoder; 1263-a compensation data generating part; 1265-a compression section; 120A-a driver; 122-a scan driver; 124-source driver.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and the
The claims do not intend to distinguish between components that differ in name but not function
The differences serve as criteria for distinction. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", horizontal "and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, detachable connections, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail with reference to the accompanying drawings, which are not intended to limit the present invention.
Embodiment 1 as shown in FIGS. 1-2, a display device includes a display portion 110, a control portion 128 and a compensation portion 126,
the control unit 128 and the compensation unit 126 are electrically connected to the display unit 110, the control unit 128 is configured to input the first input image data to the display unit 110, the display unit 110 is configured to detect the first input image data and construct a detected luminance from the first input image data, and the compensation unit 126 is configured to generate a compensation pixel from the luminance difference value when the luminance difference value between the detected luminance and the standard luminance exceeds the standard value.
Preferably, the number of the display parts 110 is plural, and the plurality of display parts 110 are connected to each other; compensation part
126 includes an encoder 1261, a memory 1267 and a decoder 1269, the encoder 1261 includes a compensation data generator
The forming unit 1263, the compressing unit 1265, the decoder 1269, the compensation data generating unit 1263, and the compressing unit 1265 are all the same as
A memory 1267; the display device further includes a driver 120A including source drivers 124, and the source drivers 124 are each connected to the display portion 110.
The display device includes a display unit 110 and a driving unit 120A; the display portion 110 is formed in a predetermined shape such as a matrix shape or a zigzag shape, and includes a certain number of pixels PX arranged therein; the pixel may display a single color of red, blue, green, or white; while the pixel may display a single color other than red, blue, green or white.
The pixel PX is composed of a light emitting element, and the light emitting element may use a self-light emitting element. For example, the light emitting element may be a light emitting diode LED, or a light emitting diode LED using a size unit of micrometer and nanometer scale; the light emitting elements may be in the form of a single peak wavelength or an even number of peak wavelengths. The light emitting diode can be formed by LED chips, the LED chips are provided with phosphor coatings, and meanwhile, light emitting diode components packaged by the LED chips can also be selectively used. The phosphor coating should be able to display no less than one peak wavelength emitted from the LED chip.
The pixel PX further includes a pixel circuit connected to the light emitting element; the pixel circuit comprises at least one thin film transistor and at least one capacitor. The pixel circuit employs a semiconductor stacked structure on an LED chip.
The driving section 120A includes a scan driver, a source driver 124, and a compensation section 126. The driving part 120A adopts a system chip; the SOC processor is electrically connected to the display unit 110. A system chip; the SOC processor is specifically an IC in a chip including a microprocessor, an internal memory 1267, a predetermined number of peripheral devices, an external bus interface unit, and the like.
The scan driver is connected to a certain number of scan lines connected to the pixels PX of the display part 110, and scan signals are transmitted to the scan lines.
The source driver 124 and a certain number of DATA lines connected to the pixels PX of the display unit 110 are connected to each other, and convert the luminance correction image DATA' transmitted from the control unit 128 into a signal in the form of a voltage or a current and transmit the signal to the DATA lines.
The compensation unit 126 refers to DATA required for luminance correction of the input video DATA raw DATA as compensation DATA
The compensation data is transmitted to the control unit 128. The compensation unit 126 may generate and store compensation data in advance; the compensation section 126 transmits pixels necessary for luminance correction, hereinafter referred to as compensation pixels, by test image luminance analysis, and then generates compensation data of the compensation pixels on the basis of the test image luminance. The compensation data is a difference between the luminance of the compensation pixel and the standard luminance or luminance correction data generated based on the luminance difference. The compensation unit 126 stores only compensation data of compensation pixels, instead of compensation data of all pixels, and thus the memory 1267 in the driving unit 120A can be reduced in capacity.
The control section 128 transmits the generated scan control signal and data control signal to the respective scan driver and source driver; the control section 128 receives input image DATA inputted from an external exemplified image controller, and then transmits luminance correction image DATA' for correcting the input image DATA to the source driver using the compensation DATA. The control unit 128 converts the input video DATA into the corrected video DATA' using the compensation DATA.
Although not shown, the driving part 120A is connected to an external power source and/or an internal power source, converts the voltages into various levels of voltages required for the operation of the respective parts, and includes a power supply part for transmitting the corresponding voltages to the display part 110 by the control of the control part 128.
The compensation unit 126 includes an encoder 1261, a memory 1267, and a decoder 1269. The encoder 1261 includes a compensation data generation unit 1263 and a compression unit 1265. The compensation data generation unit 1263 generates compensation data of the compensation pixel by outputting the compensation pixel, and the compensation data
The generation unit 1263 outputs the compensation pixels TO the display unit 110 based on the output test DATA-TO luminance of the test image and generates compensation DATA of the compensation pixels.
The test image receives input test DATA-T inputted from the outside by the control part 128 and is transmitted to the source driver 124, and the source driver 124 converts the input test DATA-T into a signal in the form of voltage or current and inputs the signal to the display part 110 through the DATA line to be converted into an image. In the test image, a speckle phenomenon may occur due to data remaining in the display portion 110, variations in threshold voltage of transistors in each pixel, variations in degree of channel shift, and luminance variations caused by heating of the light emitting element.
In this embodiment, the output test DATA DATA-TO of the test image may be obtained by shooting with a camera
The image data obtained by photographing the test image, and the photographing device may be a video camera. The camera transmits the output test DATA-TO, which is the test image-related image DATA transmitted TO the display unit 110, TO the compensation DATA generation unit 1263.
As in the present embodiment, the compensation data generation unit 1263 may store the compensation data of each compensation pixel in the memory 1267. In the embodiment of the present invention, the compensation data of all the pixels is not generated and stored in the memory 1267, and for this reason, the capacity of the memory 1267 can be effectively reduced.
In another embodiment, the compensation data generation unit 1263 compresses the compensation data of each compensation pixel from the compression unit 1265 and stores the compressed compensation data in the memory 1267. In this embodiment, the capacity of the memory 1267 can be further reduced by data compression, and the compression method is not particularly limited.
The memory 1267 may store compensation data of each compensation pixel and compensation data of each compensation pixel subjected to compression processing; the memory 1267 is a non-volatile memory, and may be, for example, a ROM or an EEPROM having a data update and delete function.
The decoder 1269 decodes the compensation data of the compensation pixels stored in the compressed memory 1267 and inputs the decoded data to the controller 128.
Refer to the embodiment of the utility model provides a, compensation data generation and storage go on according to appointed operating cycle in display device use after display device sends out the factory before detection stage, perhaps sends out the factory.
In addition, as shown in fig. 4 to 8, the luminance adjusting method of the display device includes a first image displaying stage of outputting first input image data to the display portion 110 with a predetermined number of pixels; a compensation pixel output stage for forming a detected luminance based on the first input image data when the detected luminance is equal to the first input image data
When the luminance difference value of the standard luminance exceeds the standard value, compensation data corresponding to the compensation pixel is generated according to the luminance difference value.
A compensation data generation unit 1263 for generating a luminance plateau capable of displaying the luminance of each pixel; the compensation data generation unit 1263 may generate a luminance table on which the test image is mapped so as to correspond to the luminance of each pixel at the pixel position. The luminance plateau and the resolution standard of the display unit 110 are consistent with each other.
The compensation data generation unit 1263 may set a standard luminance of each pixel in the luminance table; standard luminance of
The detected luminance at a position of one of the upper, lower, left, right, and diagonal adjacent pixels within a position specification range (for example, nxn window) of each pixel. The positions of the adjacent pixels set to the standard luminance may be set in advance.
The compensation data generation section 1263 may calculate a difference between the detected luminance and the standard luminance of each pixel.
The compensation data generation unit 1263 outputs a compensation pixel for a pixel whose luminance difference value exceeds a standard value. The compensation data generating part 1263 compensates the difference between the luminance of the pixel and the average luminance of the test image
The compensation data is generated on the basis, i.e. the compensation data is the difference between the luminance of the compensation pixel and the average luminance of the test image.
The left side of fig. 7(al) shows a test image at a specific level on the display device, and the right side of fig. 7(a2) is a luminance chart measured with reference to a test image designation line; in the right graph, the X-axis shows pixel position and the Y-axis shows luminance.
In the luminance chart of fig. 7(a2), the luminance difference between the blocks of the adjacent pixels of the test image will exceed the standard value. In order to ensure that the luminance difference value between adjacent pixels in the test image does not exceed a standard value, a driving part of the display device outputs a correction pixel required by luminance correction; correction data for the correction pixels can be generated and stored at the same time.
The left side of fig. 7(bl) is a test image displayed at a specific level on the display device, and the right side of fig. 7(b2) is a luminance chart measured with reference to a specified line of the test image; in the left graph, the X-axis shows pixel position and the Y-axis shows luminance.
In the luminance chart of fig. 7(b2), the luminance difference between the blocks of the neighboring pixels of the test image will be lower than the standard value. In this case, even when the luminance of the pixel located at the center of the specified line exceeds the luminance difference value of the maximum luminance located in the specified line, the display device does not need to perform luminance correction when the luminance difference value of the adjacent pixel is lower than the standard value.
Referring to fig. 7 and 8, the compensation data generation unit 1263 generates a luminance distribution map that can display the luminance distribution of the test image; the compensation data generation unit 1263 may generate a test showing the number of pixels in each luminance at the same time
The brightness distribution of the image.
The compensation data generation unit 1263 may set the center luminance CB having the highest frequency in the luminance distribution map used as the standard luminance.
The compensation data generation section 1263 may calculate a difference between the detected luminance and the standard luminance of each pixel.
The compensation data generation unit 1263 outputs a compensation pixel for a pixel whose luminance difference value exceeds a standard value. The compensation data generation part 1263 takes the difference between the compensation pixel brightness and the center brightness CB of the test image as the base
Compensation data is generated on the basis. For example, the compensation data may be a difference between the luminance of the compensation pixel and the center luminance CB of the test image.
Example 2 as shown in fig. 3, the difference from example 1 is: the driver of the present embodiment includes a scan driver 122;
the control unit 128 includes a data correction unit for transmitting the luminance correction data to the display unit 110. The output test DATA DATA-TO of the test image is shown as being sensed by the driver 120A
The application unit derives output test data of the test image on the display unit 110. In this case, a certain number of sensing lines connected to the pixels PX are provided in the display part 110.
The compensation DATA generation section 1263 detects the luminance of the pixel from the output test DATA-TO and calculates the difference between the detected luminance and the standard luminance for each pixel.
The compensation data generation unit 1263 generates a pixel having a luminance difference value exceeding a standard value, which is used as a compensation pixel; the simultaneous compensation data generation unit 1263 may also generate compensation data for the compensation pixels. The compensation data may be a difference between the detected luminance and the standard luminance, and the compensation data may also be a luminance correction value for compensating the luminance difference.
The other structures are the same as those of embodiment 1, and are not described again here. Those skilled in the art to which the invention pertains will also be able to practice the invention in light of the foregoing disclosure and teachings
Variations and modifications may be made to the above-described embodiments. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious modifications, replacements or variations made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention. Furthermore, although used in this specification
Certain terminology is used for convenience in description and does not constitute a limitation on the invention
And (4) limiting.
Claims (5)
1. A display device, characterized in that: the display device comprises a display part (110), a control part (128) and a compensation part (126), wherein the control part (128) and the compensation part (126) are electrically connected with the display part (110), the control part (128) is used for inputting first input image data to the display part (110), the display part (110) is used for detecting the first input image data and forming detected luminance according to the first input image data, and the compensation part (126) is used for generating compensation pixels according to the luminance difference value when the luminance difference value of the detected luminance and standard luminance exceeds a standard value.
2. A display device as claimed in claim 1, characterized in that: the number of the display parts (110) is multiple, and the display parts (110) are mutually connected.
3. A display device as claimed in claim 2, characterized in that: the control unit (128) includes a data correction unit for transmitting luminance correction data to the display unit (110).
4. A display device as claimed in claim 1, characterized in that: the compensation unit (126) includes an encoder (1261), a memory (1267), and a decoder (1269), the encoder (1261) includes a compensation data generation unit (1263) and a compression unit (1265), and the decoder (1269), the compensation data generation unit (1263), and the compression unit (1265) are connected to the memory (1267).
5. A display device as claimed in claim 1, characterized in that: the display device further includes a driver (120A) including a scan driver (122) and a source driver (124), the scan driver (122) and the source driver (124) each being connected to the display section (110).
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| CN201921661293.2U CN210896554U (en) | 2019-10-07 | 2019-10-07 | Display device |
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| CN201921661293.2U CN210896554U (en) | 2019-10-07 | 2019-10-07 | Display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116489368A (en) * | 2023-06-21 | 2023-07-25 | 禹创半导体(深圳)有限公司 | Image dynamic compression method and image dynamic compression device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116489368A (en) * | 2023-06-21 | 2023-07-25 | 禹创半导体(深圳)有限公司 | Image dynamic compression method and image dynamic compression device |
| CN116489368B (en) * | 2023-06-21 | 2023-09-01 | 禹创半导体(深圳)有限公司 | Image dynamic compression method and image dynamic compression device |
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Effective date of registration: 20210316 Address after: 210000 B-5, 69 Shuangfeng Road, Pukou Economic Development Zone, Pukou District, Nanjing City, Jiangsu Province Patentee after: Yuchuang semiconductor (Nanjing) Co.,Ltd. Address before: 510700 Room 303, office area, No.23 Jinzhong Road, Huangpu District, Guangzhou City, Guangdong Province Patentee before: Yuchuang semiconductor (Guangzhou) Co.,Ltd. |