KR-102961122-B1 - APPLICATION PROCESSOR AND DISPLAY DEVICE USING THE SAME

KR102961122B1KR 102961122 B1KR102961122 B1KR 102961122B1KR-102961122-B1

Abstract

A display device using an application processor that generates quantized data reflecting compensation values of pixels based on imaging data according to one embodiment, wherein the display device comprises: a pixel unit including the pixels arranged in a unit block; a memory that receives the quantized data from the application processor and stores a preset quantization level corresponding to the quantized data; and a timing control unit that generates compensation value data through data remapping based on the quantized data and the preset quantization level.

Inventors

유현석

Assignees

삼성디스플레이 주식회사

Dates

Publication Date: 20260507
Application Date: 20211201

Claims (20)

A compensation value calculation unit that calculates compensation values for pixels arranged in a unit block of the pixel portion based on captured data of the pixel portion of the display device; Maximum and minimum value storage unit for storing maximum and minimum values for each unit block in the above compensation value; A linear transformation unit that generates mapped compensation values of pixels placed in the unit block using the maximum value and the minimum value; and An application processor including a quantization unit that quantizes the mapped compensation value to generate quantized data.
In paragraph 1, The above linear transformation unit is an application processor that generates the mapped compensation value through a compressed linear transformation method.
In paragraph 2, The above compressed linear transformation method includes a first-order linear transformation equation, and An application processor that, in the above first-order linear transformation equation, sets the maximum value to + 2n and the minimum value to -2n .
In Paragraph 3, The above linear transformation unit is an application processor that generates the mapped compensation value by applying the compensation value of pixels placed in the unit block to the above first-order linear transformation equation.
In Paragraph 4, The above-mentioned mapped compensation value corresponds to an application processor in the range of + 2n to -2n .
In paragraph 1, The above quantization unit is an application processor that quantizes the mapped compensation value to be represented as 2 m bits.
In a display device utilizing an application processor that generates quantized data reflecting compensation values of pixels based on image data, The above display device is, A pixel section comprising the above pixels arranged in a unit block; A memory that receives the quantization data from the application processor and stores a preset quantization level corresponding to the quantization data; and It includes a timing control unit that generates compensation value data through data remapping based on the above quantization data and the above preset quantization level, and The above timing control unit is, A selection unit that receives the quantization data and the preset quantization level, and selects a remapping compensation value based on the quantization data and the preset quantization level; A data remapping unit that receives a remapping compensation value from the above selection unit and generates compensation value data through a restoration linear transformation method; and A display device comprising a compensation unit that receives the above compensation value data and generates compensation data by reflecting the above compensation value data in input image data.
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In Paragraph 7, The above-mentioned quantization levels are a display device including a first quantization level, a second quantization level, and a third quantization level.
In Paragraph 9, The above selection unit is, A display device comprising a first value selection unit that receives quantized data excluding a quantized maximum value and a quantized minimum value among the quantized data and the first quantization level, and selects and outputs a pixel remapping compensation value based on the quantized data and the first quantization level.
In Paragraph 10, The above selection unit is, A display device further comprising a second value selection unit that receives a quantized maximum value and a second quantization level among the quantized data, and selects and outputs a maximum remapping compensation value based on the quantized maximum value and the second quantization level.
In Paragraph 11, The above selection unit is, A display device further comprising a third value selection unit that receives a quantized minimum value and a third quantization level among the quantized data, and selects and outputs a minimum remapping compensation value based on the quantized minimum value and the third quantization level.
In Paragraph 12, The above restoration linear transformation method includes a first-order inverse linear transformation formula, and A display device that outputs compensation value data by inputting the pixel remapping compensation value, the maximum remapping compensation value, and the minimum remapping compensation value in the above first-order linear inverse transformation equation.
In Paragraph 7, The above display device is, A display device further comprising a data driving unit that provides a data signal to which the compensation data is applied to the pixels.
In a display device utilizing an application processor that generates quantized data reflecting compensation values of pixels based on image data, The above display device is, A pixel section comprising the above pixels arranged in a unit block; A memory that receives the quantization data from the application processor and stores a preset quantization level corresponding to the quantization data; and It includes a timing control unit that generates compensation value data through data remapping based on the above quantization data and the above preset quantization level, and The above application processor is, A compensation value calculation unit that calculates compensation values for pixels arranged in the unit block based on the above-mentioned imaging data; Maximum and minimum value storage unit for storing maximum and minimum values for each unit block in the above compensation value; A linear transformation unit that generates mapped compensation values of pixels placed in the unit block using the maximum value and the minimum value; and A display device comprising a quantization unit that generates quantized data by quantizing the mapped compensation value.
In Paragraph 15, The above linear transformation unit is a display device that generates the mapped compensation value through a compressed linear transformation method.
In Paragraph 16, The above compressed linear transformation method includes a first-order linear transformation equation, and A display device in which, in the above first-order linear transformation equation, the maximum value is set to + 2n and the minimum value is set to -2n .
In Paragraph 17, A display device that generates a mapped compensation value by applying the compensation value of pixels arranged in the unit block to the first linear transformation equation.
In Paragraph 18, The above-mentioned mapped compensation value is a display device corresponding to the range of + 2n to -2n .
In Paragraph 15, The above quantization unit is a display device that quantizes the mapped compensation value to be represented as 2 m bits.

Description

Application Processor and Display Device Using the Same The present invention relates to an application processor and a display device using the same. As interest in information displays intensifies and the demand for portable information media rises, the demand for and commercialization of display devices are becoming a major focus. FIG. 1 is a drawing for explaining an imaging method for brightness correction of a display device according to one embodiment. FIG. 2 is a drawing for explaining the configuration of a display device according to one embodiment. FIG. 3 is a drawing for explaining a part of the configuration of an application processor and a display device using the same according to one embodiment. FIG. 4 is a diagram illustrating the configuration of an application processor according to one embodiment. FIG. 5 is a drawing for explaining a pixel portion of a display device according to one embodiment. FIG. 6 is a diagram for explaining the pixels of a pixel portion according to one embodiment. FIG. 7 is a diagram illustrating the compensation value for each unit block of a display device according to one embodiment. FIGS. 8 and 9 are drawings for illustrating the quantization of mapped compensation values of a display device according to one embodiment. FIG. 10 is a diagram illustrating the configuration of a timing control unit according to one embodiment. FIG. 11 is a diagram illustrating the driving method of the selection unit and data remapping unit of FIG. 10. FIGS. 12 to 14 are drawings for explaining the quantization levels of a display device according to one embodiment. FIG. 15 is a drawing for explaining the brightness correction effect of a display device according to one embodiment and a display device according to a comparative example. FIG. 16 is a circuit diagram illustrating an example of a pixel included in the display device of FIG. 2. FIG. 17 is a perspective view illustrating a light-emitting element included in a display device according to one embodiment. The present invention is capable of various modifications and may take various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the invention to the specific disclosed forms, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. A singular expression includes a plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "having" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Hereinafter, an application processor according to an embodiment of the present invention and a display device using the same will be described with reference to the drawings related to the embodiments of the present invention. FIG. 1 is a drawing for explaining an imaging method for brightness correction of a display device according to one embodiment, and FIG. 2 is a drawing for explaining the configuration of a display device according to one embodiment. Referring to FIG. 1, for brightness correction of a display device (1000) according to one embodiment, an imaging element (10) can be positioned to face the display device (1000). The image element (10) can capture a light-emitting scene of a pixel portion included in a display device (1000) and can transmit the captured image data (PDATA) to an application processor (2000) (application processor; AP). The imaging element (10) may include a light-receiving element such as a CCD (Charge-Coupled Device) camera. Additionally, the imaging element (10) may not include a light-receiving element itself, but may be connected to an external light-receiving element and configured to receive a luminance image captured by the external light-receiving element. The imaging method illustrated in Fig. 1 can be performed before shipment of the display device (1000). Referring to FIG. 2, a display device (1000) according to one embodiment may include a pixel unit (100), a scanning driving unit (200), a data driving unit (300), a timing control unit (400), and a memory (500). The display device (1000) may include a flexible display device, a rollable display device, a curv