TWI841298B - Display device and screen display method thereof - Google Patents

Abstract

A display device and screen display method thereof, wherein the display device includes a timing control circuit, a drive control circuit and a display panel, the timing control circuit generates a timing signal and a first start signal, the drive control circuit is coupled to the timing control circuit, and the display panel is coupled to the driver control circuit and includes multiple rows of pixels, wherein the screen display method includes: the display device executes a display program after receiving an external image, wherein the external image includes multiple rows of signals, and the display program includes: the drive control circuit starts counting the row number of the rows of signals according to the timing signal and the first start signal; and the display panel displays the rows of signals following a row number on the rows of pixels according to the row number corresponding to the second start signal wherein the second start signal is generated according to the timing signal and the first start signal.

Description

Display device and screen display method thereof

The present invention relates to a display technology, in particular to a display device and a screen display method thereof.

Current display devices all use the scaling circuit (Scalar) in the image control circuit to process the image, such as carousel and segmentation. However, as the image quality becomes higher and higher, the frame buffer of the scaling circuit must increase the memory (RAM) to store the processed image, and its cost will increase with the image quality.

The present invention provides a method that does not require increasing the capacity of the frame buffer of the scaling processing circuit in the image control circuit, thereby achieving the effect of effectively controlling costs while completing the image processing.

The present invention provides a screen display method for a display device, wherein the display device includes a timing control circuit, a drive control circuit and a display panel, the timing control circuit generates a timing signal and a first start signal, the display panel includes multiple rows of pixels, wherein the screen display method includes the display device receiving an external image and executing a display program, wherein the external image includes multiple rows of signals, and the display program includes: the drive control circuit starts counting the row numbers of the multiple rows of signals according to the timing signal and the first start signal; and the display panel displays the multiple rows of signals after the row number on the multiple rows of pixels according to the row number corresponding to the second start signal, wherein the second start signal is generated according to the timing signal and the first start signal.

The display device provided by the present invention includes a timing control circuit, a drive control circuit and a display panel, wherein the timing control circuit is used to generate a timing signal and a first start signal, the drive control circuit is coupled to the timing control circuit, the display panel is coupled to the drive control circuit, and includes multiple rows of pixels. The display device executes a display program after receiving an external image, wherein the external image includes multiple rows of signals, and the display program includes: the drive control circuit starts counting the row numbers of the multiple rows of signals according to the timing signal and the first start signal; and the display panel displays the multiple rows of signals after the row numbers on the multiple rows of pixels according to the row numbers corresponding to the second start signal, wherein the second start signal is generated according to the timing signal and the first start signal.

In one embodiment of the present invention, the timing of the second activation signal is the same as the timing of the first activation signal.

In one embodiment of the present invention, the timing of the second activation signal is after the timing of the first activation signal.

In one embodiment of the present invention, the resolution of the external image is greater than the resolution of the display panel.

Since the present invention adopts a drive control circuit and a display program, it is not necessary to increase the capacity of the frame buffer of the scaling processing circuit in the image control circuit, thereby achieving the effect of effectively controlling costs while completing the image processing.

In order to make the above and other purposes, features and advantages of the present invention more clearly understood, the following is a detailed description of the embodiments with the accompanying drawings.

1: Display device

2: Timing control circuit

3: Drive control circuit

4: Display panel

41: row pixels

51: Column pixels

A: External images

A1,A2,A3,A541: row number

CLK: timing signal

DIO: first start signal

DIO_D: Second start signal

H1,H2,H3: row number

S1, S3: Steps

V1,V2,V3: row number

FIG. 1 is a system block diagram of a display device provided in one embodiment of the present invention; FIG. 2 is a timing diagram of a display device provided in one embodiment of the present invention; FIG. 3 is a system block diagram of a display device provided in another embodiment of the present invention; FIG. 4 is a system block diagram of a display device provided in another embodiment of the present invention; FIG. 5 is a timing diagram of a display device provided in another embodiment of the present invention; FIG. 6 is a flow chart of a screen display method of a display device provided in an embodiment of the present invention; FIG. 7 is an example of an external image provided in the present invention; FIG. 8 is an example of an image displayed by a display panel provided in the present invention; FIG. 9A, 9B, 9C, and 9D are examples of images displayed by a display panel provided in the present invention; and FIG. 10A, 10B, 10C, and 10D are examples of images displayed by a display panel provided in the present invention.

In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the attached drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person with ordinary knowledge in the relevant technical field without making progressive labor are within the scope of protection of the present invention.

It should be noted that if there is no conflict, the various features in the embodiments of the present invention can be combined with each other and are within the scope of protection of the present invention. In addition, the words "first", "second", "third" and so on used in the present invention do not limit the data and execution order, but only distinguish the same or similar items with basically the same functions and effects.

Furthermore, it should be noted that in the embodiments of the present invention, the coupling methods include: direct electrical connection, and electrical connection through other components, modules, or devices. The "coupling" that appears in the following text includes these methods, and will not be elaborated in the following text.

Please refer to FIG. 1, which is a system block diagram of a display device provided by an embodiment of the present invention. The display device 1 provided by the present embodiment includes a timing control circuit 2, a drive control circuit 3 and a display panel 4, wherein the drive control circuit 3 is coupled to the timing control circuit 2, and the display panel 4 is coupled to the drive control circuit 3. In another embodiment (not shown), the display device 1 further includes an image control circuit. It can be noted that the image control circuit is in a state of not processing external images. The display device 1 only stores external images through the image control circuit, and the frame buffer in the scaling processing circuit of the image control circuit has a fixed capacity and will not increase with the increase of the external image resolution.

Please refer to FIG. 2, which is a timing diagram of a display device provided by an embodiment of the present invention. The timing control circuit 2 provided by the present embodiment is used to generate a timing signal CLK and a first start signal DIO, wherein the first start signal DIO is a vertical start signal. In another embodiment, the first start signal DIO is a horizontal start signal. In another embodiment, the first start signal DIO includes a vertical start signal and a horizontal start signal.

Please refer to FIG. 1 again. The display panel 4 provided in this embodiment includes multiple rows of pixels 41, and each row of pixels 41 has a row number, for example, multiple rows of pixels 41 are numbered V1, V2, V3... from top to bottom. In another embodiment, please refer to FIG. 3, the display panel 4 includes multiple columns of pixels 51, and each column of pixels 51 has a column number, for example, multiple columns of pixels 51 are numbered H1, H2, H3... from left to right. In another embodiment, please refer to FIG. 4, the display panel 4 includes a pixel matrix, and the pixel matrix includes multiple rows of pixels 41 and multiple columns of pixels 51, the multiple rows of pixels 41 are numbered from top to bottom and the multiple columns of pixels 51 are numbered from left to right.

In addition, in this embodiment, the display panel 4 is a rectangular shape. In other embodiments, the display panel 4 is, for example, but not limited to, a circular, square, triangular, hexagonal, polygonal, etc. shape.

Please refer to FIG. 2 again. The drive control circuit 3 provided in this embodiment is used to generate a second start signal DIO_D according to the timing signal CLK and the first start signal DIO, wherein the timing of the second start signal DIO_D is after the timing of the first start signal DIO. In another embodiment, please refer to FIG. 5, the timing of the second start signal DIO_D is the same as the timing of the first start signal DIO. In other embodiments, the drive control circuit 3 can be selected from control circuits such as but not limited to configurable mixed signal IC (CMIC), complex programmable logic device (CPLD), etc., and the drive control circuit 3 includes, for example but not limited to at least a delay circuit and a selection circuit.

Please refer to FIG. 6, which is a flow chart of the screen display method of the display device provided by the embodiment of the present invention. The screen display method provided by the present embodiment is that the display device 1 receives an external image A and executes a display program, wherein the external image A includes multiple lines of signals as shown in FIG. 7, and each line of signals has a line number, for example, the multiple lines of signals are numbered A1, A2, A3..., A541... in sequence from top to bottom; the display program is stored in the storage circuit of the display device 1, such as but not limited to a memory, and is executed by the drive control circuit 3 to include the following steps. Step S1: The drive control circuit 3 starts counting the line numbers of the multiple lines of signals according to the timing signal CLK and the first start signal DIO. Step S3: The display panel 4 displays multiple rows of signals after the row number on multiple rows of pixels 41 according to the row number corresponding to the second activation signal DIO_D, wherein the second activation signal DIO_D is generated according to the timing signal CLK and the first activation signal DIO.

In one embodiment, the resolution of the external image A is greater than the resolution of the display panel 4. For example, the resolution of the display panel 4 is 1920*540, which means that the display panel 4 has 540 rows of pixels 41 in the vertical direction; the resolution of the external image A is 1920*1080, which means that the external image A has 1080 rows of signals in the vertical direction. When the display device 1 receives the external image A, the drive control circuit 3 starts counting the row numbers A1, A2, A3..., A541... of the multiple rows of signals in the external image A according to the timing signal CLK and the first start signal DIO, wherein the first start signal DIO is a vertical start signal. When the drive control circuit 3 generates the second start signal DIO_D according to the timing signal CLK and the first start signal DIO, for example, when the drive control circuit 3 counts to the row number A541, the second start signal DIO_D is generated, and the display panel 4 displays the row number A541 corresponding to the second start signal DIO_D to display the multiple rows of signals after the row number A541 on the multiple rows of pixels 41 as shown in FIG. 8, wherein the second start signal DIO_D is a vertical start signal.

In another embodiment, the display device 1 and the screen display method provided by the present invention are executed in the horizontal direction, that is, the first start signal DIO is a horizontal start signal, and the second start signal DIO_D is a horizontal start signal. The steps are the same as the previous embodiment, and the difference is only the row-column conversion, so it is not repeated. In another embodiment, the display device 1 and the screen display method provided by the present invention are executed in the vertical direction and the horizontal direction at the same time. The first start signal DIO includes a vertical start signal and a horizontal start signal, and the second start signal DIO_D includes a vertical start signal and a horizontal start signal. The steps are the same as the previous embodiment, so it is not repeated.

In another embodiment, the resolution of the external image A is less than the resolution of the display panel 4. In another embodiment, the resolution of the external image A is equal to the resolution of the display panel 4.

In addition, in one embodiment, the drive control circuit 3 is connected to a plurality of display panels 4. When the resolution of the external image A is greater than the resolution of each display panel 4, each display panel 4 can display the same or different parts of the external image A according to the corresponding (same or different timing) second activation signal DIO_D. In one example, the drive control circuit 3 is connected to two display panels 4. When the resolution of the external image A is 1920*1080, which is greater than the resolution of each display panel 4 is 1920*540, each display panel 4 can display parts of the external image A according to its own second activation signal DIO_D, as shown in FIGS. 9A, 9B, 9C, and 9D. In another example, the drive control circuit 3 is connected to three display panels 4. When the resolution of the external image A is 1920*1080, which is greater than the resolution of each display panel 4 is 1920*360, each display panel 4 can display part of the external image A according to its second activation signal DIO_D, as shown in Figures 10A, 10B, 10C, and 10D.

In another embodiment, the drive control circuit 3 is connected to a plurality of display panels 4. When the resolution of the external image A is less than the resolution of each display panel 4, each display panel 4 can display the external image A according to the corresponding second activation signal DIO_D. For example, the external image A can be arranged to be displayed on each display panel 4.

Therefore, it is worth noting that the second activation signal DIO_D is related to the display of the display panel 4. The timing of the second activation signal DIO_D can be determined according to the actual needs of presenting the image. The present invention is not limited to the above example.

In summary, the display device and screen display method provided by the present invention adopt a drive control circuit and a display program, so there is no need to increase the capacity of the frame buffer of the scaling processing circuit in the image control circuit, thereby achieving the effect of effectively controlling costs while completing the image processing.

Although the present invention has been disclosed as above by the embodiments, it is not intended to limit the present invention. Those with common knowledge in the technical field to which the present invention belongs may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of the patent application attached hereto.

1: Display device

2: Timing control circuit

3: Drive control circuit

4: Display panel

41: row pixels

V1,V2,V3: row number

Claims (8)

A screen display method of a display device, wherein the display device includes a timing control circuit, a drive control circuit and a display panel, the timing control circuit generates a timing signal and a first start signal, the display panel includes multiple rows of pixels, wherein the screen display method includes: The display device executes a display program after receiving an external image, wherein the external image includes multiple rows of signals, and the display program includes: The drive control circuit starts counting the row numbers of the multiple rows of signals according to the timing signal and the first start signal; and The display panel displays the multiple rows of signals after the row number on the multiple rows of pixels according to the row number corresponding to a second start signal, wherein the second start signal is generated according to the timing signal and the first start signal. A screen display method for a display device as described in claim 1, wherein the timing of the second start signal is the same as the timing of the first start signal. A screen display method for a display device as described in claim 1, wherein the timing of the second start signal is after the timing of the first start signal. A screen display method for a display device as described in claim 1, wherein the resolution of the external image is greater than the resolution of the display panel. A display device, comprising: A timing control circuit for generating a timing signal and a first start signal; A drive control circuit coupled to the timing control circuit; A display panel coupled to the drive control circuit and comprising a plurality of rows of pixels; wherein the display device executes a display program after receiving an external image, wherein the external image comprises a plurality of rows of signals, and the display program comprises; The drive control circuit starts counting the row numbers of the plurality of rows of signals according to the timing signal and the first start signal; and The display panel displays the plurality of rows of signals after the row number on the plurality of rows of pixels according to the row number corresponding to a second start signal, wherein the second start signal is generated according to the timing signal and the first start signal. A display device as described in claim 5, wherein the timing of the second start signal is the same as the timing of the first start signal. A display device as described in claim 5, wherein the timing of the second start signal is after the timing of the first start signal. A display device as described in claim 5, wherein the resolution of the external image is greater than the resolution of the display panel.

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