TWI752550B - Display device - Google Patents

Abstract

A display device includes a display panel and a driving control circuit. The display panel includes a plurality of pixels. The driving control circuit is coupled to the display panel. In a first mode, the driving control circuit drives the plurality of pixels individually within a first frame period. In a second mode, the driving control circuit drives a first part of the plurality of pixels individually within a second frame period. The first frame period is greater than the second frame period. The first part of the plurality of pixels is less than the plurality of pixels of the display panel. In the second mode, the plurality of pixels are divided into a plurality of first blocks, and the first part of plurality of pixels includes at least one pixel in each first block.

Description

display device

The present invention relates to a display device, especially a display device capable of adjusting the frame rate.

As the user's usage scenarios of the display panel become more and more diverse, the user's choice of the resolution and frame rate of the display panel becomes more and more flexible. However, generally speaking, the pixel clock frequency of the display panel is fixed, so the frame rate of the display panel is also limited, and it is difficult to increase. In addition, as the resolution of the display panel is getting higher and higher, if the designer wants to increase the frame rate of the display panel, it is necessary to use a circuit with strong function and high power consumption, which will increase the cost and cannot meet the requirements of the use of the display panel. the elastic demand of the users.

An embodiment of the present invention provides a display device. The display device includes a display panel and a drive control circuit.

The display panel includes a plurality of pixels. The driving control circuit is coupled to the display panel. In the first mode, the driving control circuit individually drives a plurality of pixels in the first frame period. In the second mode, the driving control circuit individually drives the pixels of the first part of the plurality of pixels in the second frame period. The first frame period is greater than the second frame period.

In the second mode, the plurality of pixels are divided into a plurality of blocks, and the pixels of a first portion of the plurality of pixels include one pixel in each of the first blocks.

An embodiment of the present invention provides a display device. The display device includes a display panel and a drive control circuit.

The display panel includes a plurality of pixels. The driving control circuit is coupled to the display panel. In the first mode, the driving control circuit individually drives a plurality of pixels in the first frame period. In a second mode, the driving control circuit individually drives a plurality of pixels in the first specific area of the display panel in the second frame period. The first frame period is greater than the second frame period, and the pixels in the first specific block are less than the pixels of the display panel.

100, 200, 300: Display device

110, 310: Display panel

120, 320: drive control circuit

P(1,1) to P(M,N), PA, PB, PC, PD: Pixels

B1: The first block

B2: Second block

230, 330: screen menu drive control circuit

340: Display Specification Control Circuit

DS: Data Source System

SB1: The first specific block

SB2: Second specific block

FIG. 1 is a schematic diagram of a display device according to an embodiment of the present invention.

FIG. 2 is a use situation diagram of the display panel in the second mode according to an embodiment of the present invention.

FIG. 3 is a use situation diagram of the display panel according to an embodiment of the present invention in a third mode.

FIG. 4 is a schematic diagram of a display device according to another embodiment of the present invention.

FIG. 5 is a schematic diagram of a display device according to another embodiment of the present invention.

FIG. 1 is a schematic diagram of a display device 100 according to an embodiment of the present invention. The display device 100 includes a display panel 110 and a driving control circuit 120 . The display panel 110 may include a plurality of pixels P(1,1) to P(M,N). The driving control circuit 120 may be coupled to the display panel 110 .

In some embodiments, the pixels P(1,1) to P(M,N) may include a plurality of light emitting diodes (Light Emitting Diodes, LEDs), a plurality of organic light emitting diodes (Organic Light Emitting Diodes) Diode, OLED), a plurality of Micro Light Emitting Diodes (Micro Light Emitting Diode) or a plurality of sub-millimeter light emitting diodes (Mini Light Emitting Diode), and the driving control circuit 120 can independently and individually drive each pixel P (1,1) to P(M,N).

In some embodiments, the display device 100 may drive the display panel 110 at different frame rates in different modes. For example, in the first mode, the driving control circuit 120 can individually drive the pixels P(1,1) to P(M,N) in each frame period, and in the second mode, the driving control circuit 120 Then, a part of the pixels in the pixel driving control circuit 120 can be individually driven in each frame period. Because in the second mode, the driving control circuit 120 only drives a part of the pixels P(1,1) to P(M,N) instead of driving all the pixels P(1,1) to P(M, N), so the length of each frame period in the first mode may be greater than the length of each frame period in the second mode with the pixel clock remaining unchanged. That is, the display device 100 can drive the display panel 110 with a lower frame period in the second mode, that is, in the second mode, the display device 100 will have a higher frame rate.

FIG. 2 is a usage situation diagram of the display panel 110 in the second mode according to an embodiment of the present invention. In FIG. 2, the pixels P(1,1) to P(M,N) can be divided into a plurality of first blocks B1, and the display device 100 can drive each first block in the second mode at least one pixel in B1. In some embodiments, each of the first blocks B1 may have the same size and shape, and the driving control circuit 120 may drive each of the first blocks B1 in different frame periods in the second mode. Pixels at different positions.

For example, in FIG. 2, each first block B1 may include four pixels. In the second mode, the driving control circuit 120 may firstly drive the pixel PA located at the upper left corner of each first block B1 in one frame period, and then drive the pixel PA in each first block B1 in the next frame period. The pixel PB located in the upper right corner, and so on, drive the pixel PC located in the lower left corner of each first block B1 and the pixel PC located in the lower right corner of each first block B1 in sequence in the following two frame periods. Pixel PD, and so on alternately cycle.

That is, in the second mode, the pixels P(1,1) to P(M,N) can be divided into plural parts The driving control circuit 120 may drive the pixels of each part in different frame periods. In this way, the frame period can be shortened and the frame rate can be increased. In this embodiment, since in the second mode, the driving control circuit 120 only needs to drive a quarter of the pixels P(1,1) to P(M,N) in each frame period, so the Compared with the frame period of the first mode, the frame period of the second mode can be shortened to a quarter, so that the frame rate is quadrupled.

In some embodiments, the driving control circuit 120 may use an active matrix (AM) manner to drive the pixels P(1,1) to P(M,N). Therefore, the driving control circuit 120 may select a specific The gate lines and data lines are used to individually control the pixels P(1,1) to P(M,N).

In addition, the present invention does not limit the pixels P(1,1) to P(M,N) to be divided into a plurality of 2×2 blocks. In some other embodiments, the designer can adjust the size and shape of the first block B1 according to the requirements of the system and the expected frame rate. In addition, the present invention does not limit the division of the pixels P(1,1) to P(M,N) into blocks with the same size and shape. In some other embodiments, the designer can also divide the pixels P(1, 1) The area to P(M,N) is divided into blocks with different sizes and/or shapes, and at least one pixel in each block is driven in each frame period.

Furthermore, in some embodiments, the driving control circuit 120 may also drive a plurality of pixels in each first block B1 in each frame period of the second mode. For example, in the second mode, the driving control circuit 120 may first drive two pixels in each first block B1 in one frame period, and drive each first block B1 in the next frame period the other two pixels in and so on. For example, the driving control circuit 120 may first drive the pixel PA located at the upper left corner and the pixel PD located at the lower right corner in each first block B1, and then drive the lower left pixel in each first block B1 in the next frame period Pixel PC in the corner and pixel PB in the upper right corner. However, the present invention does not limit the order in which the driving control circuit 120 drives the pixels in the first block B1.

In this case, since in the second mode, the driving control circuit 120 drives half of the pixels P(1,1) to P(M,N) in each frame period, compared with frame week of the first mode Period, the frame period of the second mode can be shortened by half, and the frame rate can be doubled.

In some embodiments, the display device 100 may also have more modes to provide users with more frame rate options. FIG. 3 is a usage situation diagram of the display panel 110 in a third mode according to an embodiment of the present invention. In FIG. 3, the pixels P(1,1) to P(M,N) are divided into a plurality of second blocks B2, and the display device 100 can drive each second block B2 in the third mode at least one pixel in . In some embodiments, the second block B2 and the first block B1 may include different numbers of pixels. For example, in Figure 3, each second block B2 may include 3x2 pixels. In some implementations, the driving control circuit 120 can sequentially drive the six pixels in each second block B2 in six frame periods, so that in the third mode, the driving control circuit 120 can One-sixth of the pixels P(1,1) to P(M,N) are driven in each frame period, so compared with the frame period of the first mode, the frame period of the third mode can be shortened to 1/6, so the frame rate can be increased by a factor of six.

However, the present invention is not limited to each frame period, and the driving control circuit 120 can only drive one pixel in the second block B2. In some other embodiments, the driving control circuit 120 may drive two pixels in each second block B2 in each frame period. In this way, in the third mode, the driving control circuit 120 can drive one third of the pixels P(1,1) to P(M,N) in each frame period. The frame period of one mode, the frame period of the third mode can be shortened to one third, so the frame rate can be tripled. That is to say, the display device 100 can adjust the driving timings of the pixels P(1,1) to P(M,N) according to the frame rate to be displayed, and thus can flexibly display images at different frame rates.

FIG. 4 is a schematic diagram of a display device 200 according to another embodiment of the present invention. The display device 200 and the display device 100 may have similar structures and may operate according to similar principles. However, the display device 200 may further include a screen menu driving control circuit 230 . The on-screen menu driving control circuit 230 can display a function menu, such as an on-screen display (OSD), through the display panel 110 . In some embodiments, the function menu may contain a plurality of frame rate options. In this way, the user can select the desired frame rate in the function menu, and the driving control circuit 120 can enter the corresponding mode according to the frame rate selected by the user. Mode. For example, when the first frame rate in the function menu is selected, the display device 200 can enter the first mode, and when the second frame rate in the function menu is selected, the display device 200 can enter the second mode.

FIG. 5 is a schematic diagram of a display device 300 according to another embodiment of the present invention. The display device 300 may include a display panel 310 and a driving control circuit 320 . The display panel 310 may include a plurality of pixels P(1,1) to P(M,N). In some embodiments, the pixels P(1,1) to P(M,N) may include multiple light-emitting diodes, multiple organic light-emitting diodes, multiple micro-LEDs, or multiple sub-millimeter light emitting diodes diode.

The driving control circuit 320 may be coupled to the display panel 310 . In some embodiments, the driving control circuit 320 may drive the display panel 310 at different frame rates in different modes. For example, in each frame period of the first mode, the driving control circuit 320 may individually drive the pixels P(1,1) to P(M,N). However, in each frame period of the second mode, the driving control circuit 320 may only drive the pixels located in the first specific block SB1 in the display panel 310 . In FIG. 5 , the first specific block SB1 can be a square shape, and the pixels in the first specific block SB1 are less than the pixels P(1,1) to P(M,N) in the display panel 310 .

Because in the second mode, the driving control circuit 320 only drives a part of the pixels P(1,1) to P(M,N) instead of driving all the pixels P(1,1) to P(M, N), so the length of each frame period in the first mode may be greater than the length of each second frame period in the second mode with the pixel clock remaining unchanged. That is, the display device 300 can drive the display panel 110 with a lower frame period in the second mode, that is, in the second mode, the display device 300 will have a higher frame rate.

In addition, in some embodiments, the driving control circuit 320 may also individually drive the pixels located in the second specific block SB2 in the display panel 310 in each frame period in the third mode. In FIG. 5, the second specific block SB2 is also square and partially overlaps with the first specific block SB1. However, the present invention does not limit the shape and shape of the first specific block SB1 and the second specific block SB2. Location. However, since the first specific block SB1 and the second specific block SB2 may include different numbers of pixels, the third mode The frame period of the second mode can also be different from the frame period of the second mode, so it can provide users with more frame rate options.

In the embodiment of FIG. 5 , the display device 300 may further include a screen menu driving controller 330 and a display specification control circuit 340 . The screen menu driving controller 330 can be coupled to the driving control circuit 320 and can control the driving control circuit 320 to display the function menu on the display panel 310 . The function menu can contain multiple frame rate options. In this way, the user can select the desired frame rate in the function menu, and the driving control circuit 320 can enter the corresponding mode according to the obtained frame rate selected by the user. For example, when the first frame rate in the function menu is selected, the display device 300 can enter the first mode, and when the second frame rate in the function menu is selected, the display device 300 can enter the second mode.

In addition, in some embodiments, the image data displayed by the display device 300 is provided by an external data source system DS, and the data source system DS can be, for example, but not limited to, a computer. Therefore, when the display device 300 switches between different modes, the display device 300 can also notify the data source system DS of the corresponding display range change, so that the data source system DS can update the image data correspondingly to meet the needs of the current mode.

For example, the display specification control circuit 340 can obtain the Extended Display Identification Data (EDID) data of the display panel 310 . In some embodiments, when the second frame rate in the function menu is selected, the driving control circuit 320 can output an update signal to the display specification control circuit 340, and the display specification control circuit 340 can obtain the display panel 310 according to the update signal The updated extended display capability identification data. In this way, the display specification control circuit 340 can transmit the updated extended display capability identification data to the data source system DS, so as to change the image specification when the data source system DS outputs an image. For example, if the display panel 310 includes 3840×2160 pixels, that is, N is 3840 and M is 2160, then in the first mode, the data source system DS will output data of 3840×2160 pixels in each frame period. However, if the first specific block SB1 only includes 1920×1080 pixels, in the second mode, the data source system DS will also output data corresponding to 1920×1080 pixels in each frame period.

In this way, the display device 300 can flexibly adjust the frame rate when displaying images according to the needs of the user.

To sum up, the display device of the present invention can adjust the length of the frame period by adjusting the number of pixels driven in each frame period, so that the frame rate required by the user can be flexibly provided.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

100: Display device

110: Display panel

120: Drive control circuit

P(1,1) to P(M,N): pixels

Claims (15)

A display device, comprising: a display panel including a plurality of pixels; and a drive control circuit coupled to the display panel for individually driving the pixels in a first frame period in a first mode , and in a second mode, in a second frame period, individually drive a first portion of the pixels in the pixels; wherein: the first frame period is greater than the second frame period; the first portion The pixels of the display panel are less than the pixels of the display panel; and in the second mode, the pixels are divided into a plurality of first blocks, and the pixels of the first part of the pixels include each first block one pixel in . The display device of claim 1, wherein the first blocks have the same size and shape. The display device of claim 2, wherein in the second mode, the pixels of the first portion of the pixels include a pixel corresponding to a first position in each of the first blocks. The display device of claim 1, wherein: the driving control circuit is further configured to individually drive a second portion of the pixels in the pixels within a third frame period in the second mode. The display device of claim 4, wherein: the first blocks have the same size and shape; and In the second mode, the pixels of the first portion of the pixels include a pixel corresponding to a first position in each first block, and the pixels of the second portion include a pixel corresponding to a first position in each first block a pixel at a second location. The display device of claim 5, wherein: each first block includes N pixels, and N is a positive integer greater than 1; and in the second mode, the drive control circuit operates at N frame periods , respectively driving a pixel at a different corresponding position in each first block. The display device of claim 5, wherein the pixels of the first portion further comprise a pixel corresponding to a third position in each of the first blocks, and the pixels of the second portion further comprise each of the first blocks corresponds to a pixel at a fourth position. The display device according to claim 1, wherein the pixels comprise a plurality of light emitting diodes (Light Emitting Diode, LED), a plurality of organic light emitting diodes (Organic Light Emitting Diode, OLED), a plurality of micro-light emitting diodes Polar body (Micro Light Emitting Diode) or a plurality of sub-millimeter light-emitting diodes (Mini Light Emitting Diode). The display device according to claim 1, further comprising: a screen menu drive control circuit for displaying a function menu through the display panel; wherein: the function menu includes a plurality of frame rate options; and the drive control circuit is connected to When a first frame rate in the function menu is selected, the first mode is entered, and when a second frame rate in the function menu is selected, the second mode is entered. The display device of claim 1, wherein: the driving control circuit is further configured to individually drive a second part of the pixels in the pixels in a third frame period in a third mode; in the In the third mode, the pixels are divided into a plurality of second blocks, and the pixels of the second portion of the pixels include one pixel in each second block; and each first block and each A second block includes different numbers of pixels. A display device, comprising: a display panel including a plurality of pixels; and a drive control circuit coupled to the display panel for individually driving the pixels in a first frame period in a first mode , and in a second mode, in a second frame period, individually drive a plurality of pixels of a first specific block in the display panel; wherein: the first frame period is greater than the second frame period; and the The pixels in the first specific block are less than the pixels of the display panel. The display device of claim 11, wherein the pixels comprise a plurality of Light Emitting Diodes (LEDs), a plurality of Organic Light Emitting Diodes (OLEDs), a plurality of Micro-Light Emitting Diodes Polar body (Micro Light Emitting Diode) or a plurality of sub-millimeter light-emitting diodes (Mini Light Emitting Diode). The display device of claim 11, further comprising: a screen menu drive controller coupled to the drive control circuit for controlling the drive control circuit a way to display a function menu on the display panel; wherein: the function menu includes a plurality of frame rate options; and the drive control circuit enters the first mode when a first frame rate in the function menu is selected , and when a second frame rate in the function menu is selected, enter the second mode. The display device according to claim 13, further comprising: a display specification control circuit for obtaining an Extended Display Identification Data (EDID) data of the display panel; wherein: when one of the function menus When the second frame rate is selected, the drive control circuit outputs an update signal to the display specification control circuit, and the display specification control circuit obtains an updated extended display capability identification data of the display panel according to the update signal; and the The display specification control circuit transmits the updated extended display capability identification data to a data source system to change an image specification of the data source system when outputting an image. The display device of claim 11, wherein the driving control circuit is further configured to individually drive a plurality of pixels in a second specific block in the display panel in a third frame period in a third mode ; wherein: the first specific block and the second specific block include different numbers of pixels.

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