CN114446259A

CN114446259A - Wearable display device

Info

Publication number: CN114446259A
Application number: CN202210241001.XA
Authority: CN
Inventors: 黄献霆
Original assignee: ILI Techonology Corp
Current assignee: ILI Techonology Corp
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-05-06
Anticipated expiration: 2042-03-10
Also published as: CN114446259B

Abstract

The invention provides a wearable display device. The wearable display device comprises a sub-pixel array, a plurality of switches and a plurality of data lines. The sub-pixel array is divided into a plurality of sub-pixel groups. The plurality of switches are correspondingly connected with the plurality of sub-pixels. The plurality of data lines are coupled to a plurality of switches connected to corresponding groups of subpixels. In the first period, the wearable display device scans switches of a plurality of first sub-pixel columns corresponding to the plurality of sub-pixel groups. During a second period, the wearable display device scans switches of a plurality of second sub-pixel columns corresponding to the plurality of sub-pixel groups. During the frame, the polarities of the first data received by each first sub-pixel column are the same, the polarities of the second data received by each second sub-pixel column are the same, and the polarities of the first data are opposite to the polarities of the second data. Therefore, the wearable display device has low power consumption and high visual effect.

Description

Wearable display device

Technical Field

The present invention relates to a display device, and more particularly, to a wearable display device having low power consumption and high visual effect.

Background

Current wearable display devices usually use a display mechanism such as dual gate to save the number of data lines due to the narrow frame requirement. In the case of the LCD wearable display device, in order to reduce power consumption, the LCD wearable display device performs screen inversion using column inversion (column inversion). However, since two columns of sub-pixels share one data line, a user can easily see visual stripes having different brightness on the wearable display device. This causes the wearable display device to have poor visual effects.

Disclosure of Invention

The invention provides a wearable display device with low power consumption and high visual effect.

The wearable display device comprises a sub-pixel array, a plurality of switches, a plurality of data lines, a first grid drive circuit and a second grid drive circuit. The sub-pixel array is divided into a plurality of sub-pixel groups each composed of a plurality of sub-pixels. Each of the plurality of sub-pixel groups includes a plurality of sub-pixels located in a plurality of adjacent columns. First ends of the switches are correspondingly connected with the sub-pixels in a one-to-one mode. The plurality of data lines correspond to the plurality of sub-pixel groups and are coupled to second ends of a plurality of switches connected with the corresponding sub-pixel groups. The first gate driving circuit is coupled to control ends of a plurality of first switches of a plurality of first sub-pixel columns corresponding to the plurality of sub-pixel groups among the plurality of switches. The first gate driving circuit scans at least a plurality of switches among the plurality of first switches during a first period of a frame period. The second gate driving circuit is coupled to control ends of a plurality of second switches of a plurality of second sub-pixel columns corresponding to the plurality of sub-pixel groups among the plurality of switches. The second gate driving circuit scans at least a plurality of switches among the plurality of second switches during a second period of the frame period. During a frame, the polarity of the data received by each of the first sub-pixel columns is the same, the polarity of the data received by each of the second sub-pixel columns is the same, and the polarity of the data received by the first sub-pixel columns is opposite to the polarity of the data received by the second sub-pixel columns.

In view of the above, the sub-pixel array of the wearable display device is divided into a plurality of sub-pixel groups each including a plurality of sub-pixels. The first gate driving circuit scans at least a plurality of switches among the plurality of first switches during a first period. The second gate driving circuit scans at least a plurality of the plurality of second switches during a second period of the frame period. The polarities of the data received by the first sub-pixel column are the same, and the polarities of the data received by the second sub-pixel column are the same. Based on the above-described configuration, the polarity of data does not need to be frequently inverted. As a result, power consumption of the wearable display device can be reduced. In addition, the polarity of the data received by the first sub-pixel column is opposite to the polarity of the data received by the second sub-pixel column. Therefore, the wearable display device does not have visual stripes with different brightness, and the wearable display device has a better visual effect.

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.

Drawings

Fig. 1 is a schematic view of a wearable display device according to a first embodiment of the present invention;

FIG. 2 is another schematic view of a wearable display device according to a first embodiment of the invention;

FIG. 3 is a timing diagram illustrating data according to a first embodiment of the present invention;

FIG. 4 is a schematic diagram of the display operation of the sub-pixel shown in FIG. 3;

FIG. 5 is a timing diagram illustrating data according to a second embodiment of the present invention;

FIG. 6 is a schematic diagram of the display operation of the sub-pixel shown in FIG. 5;

FIG. 7 is a timing diagram illustrating data according to a third embodiment of the present invention;

FIG. 8 is a schematic diagram of the display operation of the sub-pixel shown in FIG. 7;

FIG. 9 is a timing diagram illustrating data according to a fourth embodiment of the present invention;

FIG. 10 is a schematic diagram of the display operation of the sub-pixel shown in FIG. 9;

fig. 11 is a schematic view of a wearable display device according to a second embodiment of the invention;

FIG. 12 is a timing diagram illustrating data according to a fifth embodiment of the present invention;

FIG. 13 is a schematic diagram of the display operation of the sub-pixel shown in FIG. 12.

Description of the reference numerals

110. 210: sub-pixel array

120_1, 120_2, 220_1, 220_2, 220_ 3: gate drive circuit

130: memory circuit

140: data driving circuit

C11, C12, C21, C22, C31, C32: sub-pixel column

D1, D2: in the column direction

DL 1-DL 3: data line

G (1) to G (M): gate drive signal

S1-S3: data of

SL (1) to SL (M): scanning line

SP 11-SPn 6: sub-pixel

SPG 1-SPG 3: sub-pixel group

SW 11-SWn 6: switch with a switch body

TD 1: the first period

TD 2: the second period

TD 3: the third period

TD 4: the fourth period

Plus, -the following: polarity

Detailed Description

Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts.

Referring to fig. 1, fig. 1 is a schematic view of a wearable display device according to a first embodiment of the invention. In the present embodiment, the wearable display device includes a sub-pixel array 110, a plurality of switches, a plurality of data lines, and gate driving circuits 120_1 and 120_ 2. For convenience of illustration, the switches SW 11-SWn 6 and the data lines DL 1-DL 3 are illustrated in the embodiment, but the invention is not limited thereto. In the present embodiment, the sub-pixel array 110 is divided into a plurality of sub-pixel groups composed of a plurality of sub-pixels. Taking the present embodiment as an example, the sub-pixel array 110 includes sub-pixels SP 11-SPn 6 (the invention is not limited thereto). The sub-pixel array 110 is divided into sub-pixel groups SPG1 to SPG 3. Each of the sub-pixel groups SPG1 to SPG3 includes a plurality of sub-pixels located in a plurality of adjacent columns. For example, the sub-pixel group SPG1 includes sub-pixels SP11 to SPn1 located in a first column and sub-pixels SP12 to SPn2 located in a second column. The subpixel group SPG2 includes subpixels SP13 to SPn3 located in the third column and subpixels SP14 to SPn4 located in the fourth column. The subpixel group SPG3 includes subpixels SP15 to SPn5 in the fifth column and subpixels SP16 to SPn6 in the sixth column.

In the present embodiment, the first terminals of the switches SW11 to SWn6 are connected to the subpixels SP11 to SPn6 in a one-to-one manner. For example, a first terminal of the switch SW11 is coupled to the sub-pixel SP 11. The first terminal of the switch SW12 is coupled to the sub-pixel SP12 and so on.

The data lines DL1 to DL3 correspond to the subpixel groups SPG1 to SPG 3. The data lines DL 1-DL 3 are respectively coupled to the second ends of the switches connected to the corresponding sub-pixel groups. For example, the data line DL1 is coupled to the second terminals of the switches SW 11-SWn 1, SW 12-SWn 2 connected to the sub-pixel group SPG 1. The data line DL2 is coupled to the second terminals of the switches SW 13-SWn 3 and SW 14-SWn 4 connected to the sub-pixel group SPG 2. The data line DL3 is coupled to the second terminals of the switches SW 15-SWn 5 and SW 16-SWn 6 connected to the sub-pixel group SPG 3. In the present embodiment, the data line DL1 transmits data S1. The data line DL2 transmits data S2. The data line DL3 transmits data S3.

In the present embodiment, the gate driving circuit 120_1 is coupled to the control terminals of the first switches of the first sub-pixel columns corresponding to the sub-pixel groups SPG 1-SPG 3. For example, the first sub-pixel column of the sub-pixel group SPG1 includes sub-pixels SP11 SPn 1. The first subpixel column of the subpixel group SPG2 includes subpixels SP14 to SPn 4. The first subpixel column of the subpixel group SPG3 includes subpixels SP15 to SPn 5. The gate driving circuit 120_1 is coupled to control terminals of the switches SW 11-SWn 1, SW 14-SWn 4, and SW 15-SWn 5 (i.e., first switches). Therefore, the gate driving circuit 120_1 scans at least a plurality of switches among the switches SW11 to SWn1, SW14 to SWn4, and SW15 to SWn5 during the first period of the frame period.

In the present embodiment, the gate driving circuit 120_2 is coupled to the control terminals of the second switches of the second sub-pixel columns corresponding to the sub-pixel groups SPG 1-SPG 3. For example, the second sub-pixel column of the sub-pixel group SPG1 includes sub-pixels SP12 SPn 2. The second subpixel column of the subpixel group SPG2 includes subpixels SP13 through SPn 3. The second subpixel column of the subpixel group SPG3 includes subpixels SP16 to SPn 6. The gate driving circuit 120_2 is coupled to control terminals of the switches SW 12-SWn 2, SW 13-SWn 3, and SW 16-SWn 6 (i.e., the second switch). The gate driving circuit 120_2 scans at least a plurality of switches among the switches SW12 to SWn2, SW13 to SWn3, and SW16 to SWn6 during the second period of the frame period.

In this embodiment, the gate driving circuit 120_1 can be connected to the control terminals of the switches SW11 to SWn1, SW14 to SWn4, and SW15 to SWn5 through the scan lines SL (1), SL (3), …, and SL (M-1). The gate driving circuit 120_1 supplies the gate driving signal G (1) to the SW11, SW14, SW15 through the scanning line SL (1). The gate driving circuit 120_1 provides the gate driving signal G (3) to SW21, SW24, SW25 via the scan line SL (3), and so on.

In this embodiment, the gate driving circuit 120_2 can be connected to the control terminals of the switches SW12 to SWn2, SW13 to SWn3, and SW16 to SWn6 through the scan lines SL (2), SL (4), …, and SL (m). The gate driving circuit 120_2 supplies the gate driving signal G (2) to the SW12, SW13, SW16 through the scan line SL (2). The gate driving circuit 120_2 provides the gate driving signal G (4) to SW22, SW23, SW26 via the scan line SL (4), and so on.

During the frame period, the polarities of the data S1-S3 received by the first subpixel row are the same. The polarities of the data S1-S3 received by the second sub-pixel column are all the same. In addition, the polarity of the data S1-S3 received by the first sub-pixel column is opposite to the polarity of the data S1-S3 received by the second sub-pixel columns.

It is worth mentioning here that the sub-pixel array 110 of the wearable display device is divided into sub-pixel groups SPG1 to SPG 3. The gate driving circuit 120_1 scans at least a plurality of switches among the switches SW11 to SWn1, SW14 to SWn4, and SW15 to SWn5 during the first period. The gate driving circuit 120_2 scans at least a plurality of switches among the switches SW12 to SWn2, SW13 to SWn3, and SW16 to SWn6 during the second period of the frame period. During the same frame, the polarities of the data S1-S3 received by the first sub-pixel column are the same, and the polarities of the data S1-S3 received by the second sub-pixel column are the same. Therefore, based on the above-described arrangement, the polarities of the data S1 to S3 on the data lines DL1 to DL3 are inverted only based on different periods of the frame period. As a result, power consumption of the wearable display device can be reduced. In addition, the polarity of the data S1-S3 received by the first subpixel row is opposite to the polarity of the data S1-S3 received by the second subpixel row. Therefore, the wearable display device does not have visual stripes with different brightness, and the wearable display device has a better visual effect.

In the present embodiment, the gate driving circuits 120_1 and 120_2 can be integrated into a gate driver.

Referring to fig. 2, fig. 2 is another schematic view of a wearable display device according to a first embodiment of the invention. In the present embodiment, the wearable display device includes a sub-pixel array 110, switches SW11 to SWn6, data lines DL1 to DL3, gate driving circuits 120_1 and 120_2, a storage circuit 130, and a data driving circuit 140. The configurations of the sub-pixel array 110, the switches SW 11-SWn 6, the data lines DL 1-DL 3 and the gate driving circuits 120_1 and 120_2 are clearly illustrated in the embodiment of FIG. 1, and therefore will not be repeated here. The storage circuit 130 stores data S1 to S3 required for at least one frame (picture). In the present embodiment, the storage circuit 130 stores data S1 to S3 required for a single frame. The Memory circuit 130 may be a Random Access Memory (RAM) or other Memory.

In the present embodiment, the data driving circuit 140 is coupled to the memory circuit 130 and the data lines DL 1-DL 3. The data driving circuit 140 provides the data S1-S3 stored in the memory circuit 130 to the data lines DL 1-DL 3.

Next, a plurality of operations of the wearable display device shown in fig. 1 will be described.

Referring to fig. 1, fig. 3 and fig. 4, fig. 3 is a timing diagram of data according to a first embodiment of the invention. FIG. 4 is a schematic diagram illustrating a display operation of the sub-pixel shown in FIG. 3. In the present embodiment, the data S1-S3 are provided to the corresponding sub-pixels based on the gate driving signals G (1) -G (M).

In the present embodiment, the sub-pixel group SPG1 includes sub-pixel columns C11 and C12. The subpixel group SPG2 includes subpixel columns C21 and C22. The subpixel group SPG3 includes subpixel columns C31 and C32. Note that the sub-pixel column C12 is adjacent to the sub-pixel column C22. Subpixel column C21 is adjacent to subpixel column C31.

In the present embodiment, as in the configuration of fig. 1, the gate driving circuit 120_1 is coupled to the control terminals of the switches corresponding to the (1+4a) th column of sub-pixels and the (4+4a) th column of sub-pixels. The gate driving circuit 120_2 is coupled to control terminals of a plurality of switches corresponding to the (2+4a) th column of sub-pixels and the (3+4a) th column of sub-pixels among the plurality of sub-pixels. a is an integer greater than or equal to 0. Taking this embodiment as an example, the gate driving circuit 120_1 is coupled to the control terminals of the switches SW 11-SWn 1, SW 14-SWn 4, SW 15-SWn 5 corresponding to the first column of sub-pixels, the fourth column of sub-pixels, and the fifth column of sub-pixels. Therefore, the gate driving circuit 120_1 can control the sub-pixel columns C11, C21, and C31 to receive the data S1 to S3. The gate driving circuit 120_2 is coupled to control terminals of the switches SW 12-SWn 2, SW 13-SWn 3, and SW 16-SWn 6 corresponding to the second, third and sixth rows of sub-pixels. Therefore, the gate driving circuit 120_2 can control the sub-pixel columns C12, C22, and C32 to receive the data S1 to S3.

During the first period TD1 of the frame period, the polarity of the data S1 is positive (marked as "+"). During the first period TD1, data S1 is sequentially provided to the sub-pixels SP11, SP21, … and SPn1 based on the gate driving signals G (1), G (3), … and G (M-1). In other words, the switches SW11, SW21, …, SWn1 are scanned along the column direction D1. Therefore, the subpixels SP11, SP21, …, SPn1 of the subpixel row C11 are sequentially displayed based on the row direction D1. In the present embodiment, the scanning of the first period TD1 is performed by the gate driving circuit 120_ 1.

During the first period TD1, the polarity of the data S2 is negative (labeled "-"). During the first period TD1, data S2 is sequentially provided to the sub-pixels SP14, SP24, … and SPn4 based on the gate driving signals G (1), G (3), … and G (M-1). In other words, the switches SW14, SW24, …, SWn4 are scanned along the column direction D1. Therefore, the subpixels SP14, SP24, …, SPn4 of the subpixel row C21 are sequentially displayed based on the row direction D1.

During the first period TD1, the polarity of the data S3 is positive. During the first period TD1, data S3 is sequentially provided to the sub-pixels SP15, SP25, … and SPn5 based on the gate driving signals G (1), G (3), … and G (M-1). In other words, the switches SW15, SW25, …, SWn5 are scanned along the column direction D1. Therefore, the subpixels SP15, SP25, …, SPn5 of the subpixel row C31 are sequentially displayed based on the row direction D1.

Note that the sub-pixel column C31 is adjacent to the sub-pixel column C21. During the first period TD1, the polarity of the data S3 received by the sub-pixel column C31 is opposite to the polarity of the data S2 received by the sub-pixel column C21. Therefore, the wearable display device does not display visual stripes with different brightness in the first period TD 1.

In the second period TD2 of the frame period, the polarity of the data S1 is inverted to a negative polarity. During the second period TD2, data S1 are sequentially provided to the sub-pixels SP12, SP22, …, and SPn2 based on the gate driving signals G (2), G (4), …, G (m). In other words, switches SW12, SW22, …, SWn2 are scanned along the column direction D1. Therefore, the subpixels SP12, SP22, …, SPn2 of the subpixel row C12 are sequentially displayed based on the row direction D1. In the present embodiment, the scanning of the second period TD2 is performed by the gate driving circuit 120_ 2.

During the second period TD2, the polarity of the data S2 is positive. During the second period TD2, data S2 are sequentially provided to the sub-pixels SP13, SP23, …, and SPn3 based on the gate driving signals G (2), G (4), …, G (m). In other words, the switches SW13, SW23, …, SWn3 are scanned along the column direction D1. Therefore, the subpixels SP13, SP23, …, SPn3 of the subpixel row C22 are sequentially displayed based on the row direction D1.

Note that the sub-pixel column C22 is adjacent to the sub-pixel column C12. During the second period TD2, the polarity of the data S2 received by the sub-pixel column C22 is opposite to the polarity of the data S1 received by the sub-pixel column C12. Therefore, the wearable display device does not display visual stripes with different brightness in the second period TD 2.

During the second period TD2, the polarity of the data S3 is negative. During the second period TD2, data S3 are sequentially provided to the sub-pixels SP16, SP26, …, and SPn6 based on the gate driving signals G (2), G (4), …, G (m). In other words, the switches SW16, SW26, …, SWn6 are scanned along the column direction D1. Therefore, the subpixels SP16, SP26, … and SPn6 of the subpixel row C32 are sequentially displayed based on the row direction D1.

At the end of the second period TD2, the current frame period ends. During the next frame, the polarity rules of the data S1 to S3 received by the sub-pixels SP11 to SPn6 are inverted. That is, during the next frame, the polarity of the data S1 is a negative polarity during the first period TD 1. The polarity of the data S2 is positive during the first period TD 1. The polarity of the data S3 is negative during the first period TD 1. The polarity of the data S1 is positive during the second period TD 2. The polarity of the data S2 is negative during the second period TD 2. The polarity of the data S3 is positive during the second period TD 2.

Referring to fig. 1, fig. 5 and fig. 6, fig. 5 is a timing diagram of data according to a second embodiment of the present invention. FIG. 6 is a schematic diagram of the display operation of the sub-pixel shown in FIG. 5. In the present embodiment, the data S1-S3 are provided to the corresponding sub-pixels based on the gate driving signals G (1) -G (M).

In the first period TD1 of the frame period, the polarity of the data S1 is negative. During the first period TD1, data S1 are sequentially provided to the sub-pixels SP12, SP22, …, and SPn2 based on the gate driving signals G (2), G (4), …, G (m). In other words, the switches SW12, SW22, …, SWn2 are scanned along the column direction D1. Therefore, the subpixels SP12, SP22, …, and SPn2 are sequentially displayed based on the column direction D1.

During the first period TD1, the polarity of the data S2 is positive. During the first period TD1, data S2 are sequentially provided to the sub-pixels SP13, SP23, …, SPn3 based on the gate driving signals G (2), …, G (m). In other words, the switches SW13, SW23, …, SWn3 are scanned along the column direction D1. Therefore, the subpixels SP13, SP23, …, and SPn3 are sequentially displayed based on the column direction D1. In the first period TD1, the polarity of the data S2 received by the sub-pixels SP13, SP23, …, and SPn3 is opposite to the polarity of the data S1 received by the sub-pixels SP12, SP22, …, and SPn 2. Therefore, the wearable display device does not display visual stripes with different brightness in the first period TD 1.

During the first period TD1, the polarity of the data S3 is negative. During the first period TD1, data S3 are sequentially provided to the sub-pixels SP16, SP26, …, and SPn6 based on the gate driving signals G (2), G (4), …, G (m). In other words, the switches SW16, SW26, …, SWn6 are scanned along the column direction D1. Therefore, the subpixels SP16, SP26, …, and SPn6 are sequentially displayed based on the column direction D1.

In the second period TD2 of the frame period, the polarity of the data S1 is inverted to positive polarity. During the second period TD2, data S1 is sequentially provided to the sub-pixels SP11, SP21, … and SPn1 based on the gate driving signals G (1), G (3), … and G (M-1). In other words, the switches SW11, SW21, …, SWn1 are scanned along the column direction D1. Therefore, the subpixels SP11, SP21, …, and SPn1 are sequentially displayed based on the column direction D1.

During the second period TD2, the polarity of the data S2 is negative. During the second period TD2, data S2 is sequentially provided to the sub-pixels SP14, SP24, … and SPn4 based on the gate driving signals G (1), G (3), … and G (M-1). In other words, the switches SW14, SW24, …, SWn4 are scanned along the column direction D1. Therefore, the subpixels SP14, SP24, …, and SPn4 are sequentially displayed based on the column direction D1.

During the second period TD2, the polarity of the data S3 is positive. During the second period TD2, data S3 is sequentially provided to the sub-pixels SP15, SP25, … and SPn5 based on the gate driving signals G G (1), G (3), … and G (M-1). In other words, the switches SW15, SW25, …, SWn5 are scanned along the column direction D1. Therefore, the subpixels SP15, SP25, …, and SPn5 are sequentially displayed based on the column direction D1. In the second period TD2, the polarity of the data S3 received by the sub-pixels SP15, SP25, …, and SPn5 is opposite to the polarity of the data S2 received by the sub-pixels SP14, SP24, …, and SPn 4. Therefore, the wearable display device does not display visual stripes with different brightness in the first period TD 1.

During the next frame, the polarity rules of the data S1-S3 are reversed.

Referring to fig. 1, fig. 7 and fig. 8, fig. 7 is a timing diagram of data according to a third embodiment of the present invention. FIG. 8 is a schematic diagram of the display operation of the sub-pixel shown in FIG. 7. In the present embodiment, the operation of the TD1 during the first period is similar to that of fig. 1, 3 and 4, and thus will not be repeated.

During the second period TD2, the polarity of the data S1 is inverted to a negative polarity. The data S1 is sequentially provided to the sub-pixels SPn2, …, SP22, and SP12 based on the gate driving signals G (m), …, G (4), and G (2). In other words, the switches SWn2, …, SW22, SW12 are scanned along the column direction D2. Therefore, the sub-pixels SPn2, …, SP22, and SP12 are sequentially displayed based on the column direction D2. The column direction D2 is opposite to the column direction D1.

During the second period TD2, the polarity of the data S2 is inverted to a negative polarity. The data S2 is sequentially provided to the sub-pixels SPn3, …, SP23, and SP13 based on the gate driving signals G (m), …, G (4), and G (2). In other words, the switches SWn3, …, SW23, SW13 are scanned along the column direction D2. Therefore, the sub-pixels SPn3, …, SP23, and SP13 are sequentially displayed based on the column direction D2. The polarity of the data S2 received by the subpixels SPn3, …, SP23, SP13 is opposite to the polarity of the data S1 received by the subpixels SPn2, …, SP22, SP 12. Therefore, the wearable display device does not display visual stripes with different brightness in the second period TD 2.

Further, in the second period TD2, the polarity of the data S3 is inverted to the negative polarity. The data S3 is sequentially provided to the sub-pixels SPn6, …, SP26, and SP16 based on the gate driving signals G (m), …, G (4), and G (2). In other words, the switches SWn6, …, SW26, SW16 are scanned along the column direction D2. Therefore, the sub-pixels SPn6, …, SP26, and SP16 are sequentially displayed based on the column direction D2.

Referring to fig. 1, fig. 9 and fig. 10, fig. 9 is a timing diagram of data according to a fourth embodiment of the present invention. FIG. 10 is a schematic diagram of the display operation of the sub-pixel shown in FIG. 9. The present embodiment shows subpixels SP11 to SP 86. That is, n shown in FIG. 1 is equal to 8. In the present embodiment, the frame period is divided into 4 periods.

During the first period TD1, the gate driving circuit 120_1 scans odd-numbered row switches among the switches SW11 to SW81, SW14 to SW84, and SW15 to SW85 (i.e., the first switch). In the second period TD2, the gate driving circuit 120_2 scans the odd-numbered row switches among the switches SW12 to SWn2, SW13 to SWn3, and SW16 to SWn6 (i.e., the second switch). In a third period TD3 after the second period TD2, the gate driving circuit 120_1 scans even-numbered row switches among the switches SW11 to SW81, SW14 to SW84, and SW15 to SW 85. In a fourth period after the third period, the gate driver circuit 120_2 scans even-numbered row switches among SW12 to SWn2, SW13 to SWn3, and SW16 to SWn 6.

Specifically, for example, in the embodiment, the polarity of the data S1 is positive during the first period TD 1. The data S1 is sequentially provided to the sub-pixels SP11, SP31, SP51 and SP71 based on the gate driving signals G (1), G (5), … and G (M-3). Since n equals 8, M equals 16. During the first period TD1, the polarity of the data S2 is negative. The data S2 is sequentially provided to the sub-pixels SP14, SP34, SP54 and SP74 based on the gate driving signals G (1), G (5), … and G (M-3). During the first period TD1, the polarity of the data S3 is positive. The data S3 is sequentially provided to the sub-pixels SP15, SP35, SP55 and SP75 based on the gate driving signals G (1), G (5), … and G (M-3).

During the second period TD2, the polarity of the data S1 is negative. The data S1 is sequentially provided to the sub-pixels SP12, SP32, SP52 and SP72 based on the gate driving signals G (2), G (6), … and G (M-2). During the second period TD2, the polarity of the data S2 is positive. The data S2 is sequentially provided to the sub-pixels SP13, SP33, SP53 and SP73 based on the gate driving signals G (2), G (6), … and G (M-2). During the second period TD2, the polarity of the data S3 is negative. The data S3 is sequentially provided to the sub-pixels SP16, SP36, SP56 and SP76 based on the gate driving signals G (2), G (6), … and G (M-2).

In the third period TD3, the polarity of the data S1 is positive. The data S1 is sequentially provided to the sub-pixels SP21, SP41, SP61 and SP81 based on the gate driving signals G (3), G (7), … and G (M-1). In the third period TD3, the polarity of the data S2 is negative. The data S2 is sequentially provided to the sub-pixels SP24, SP44, SP64 and SP84 based on the gate driving signals G (3), G (7), … and G (M-1). In the third period TD3, the polarity of the data S3 is positive. The data S3 is sequentially provided to the sub-pixels SP25, SP45, SP65 and SP85 based on the gate driving signals G (3), G (7), … and G (M-1).

During the fourth period TD4, the polarity of the data S1 is negative. The data S1 is sequentially provided to the sub-pixels SP22, SP42, SP62, SP82 based on the gate driving signals G (4), G (8), …, G (m). During the fourth period TD4, the polarity of the data S2 is positive. The data S2 is sequentially provided to the sub-pixels SP23, SP43, SP63, SP83 based on the gate driving signals G (4), G (8), …, G (m). During the fourth period TD4, the polarity of the data S3 is negative. The data S3 is sequentially provided to the sub-pixels SP26, SP46, SP66, SP86 based on the gate driving signals G (4), G (8), …, G (m).

When the fourth period TD4 ends, the current frame period ends. During the next frame, the polarity rules of the data S1-S3 are reversed.

Referring to fig. 11, fig. 11 is a schematic view of a wearable display device according to a second embodiment of the invention. In the present embodiment, the wearable display device includes a sub-pixel array 210, a plurality of switches, a plurality of data lines, and gate driving circuits 220_1, 220_2, and 220_ 3. For convenience of illustration, the switches SW 11-SWn 6 and the data lines DL1 and DL2 are illustrated in the embodiment, but the invention is not limited thereto. In the embodiment, the sub-pixel array 210 includes sub-pixels SP 11-SPn 6 (the invention is not limited thereto). The subpixel array 210 is divided into subpixel groups SPG1 and SPG 2. For example, the sub-pixel groups SPG1, SPG2 are adjacent to each other. The sub-pixel group SPG1 includes sub-pixels SP11 to SPn1 located at a first column (i.e., a first sub-pixel column of the sub-pixel group SPG 1), sub-pixels SP12 to SPn2 located at a second column (i.e., a second sub-pixel column of the sub-pixel group SPG 1), and sub-pixels SP13 to SPn3 located at a third column (i.e., a third sub-pixel column of the sub-pixel group SPG 1). The sub-pixel group SPG2 includes sub-pixels SP14 to SPn4 located at a fourth column (i.e., a first sub-pixel column of the sub-pixel group SPG 2), sub-pixels SP15 to SPn5 located at a fifth column (i.e., a second sub-pixel column of the sub-pixel group SPG 2), and sub-pixels SP16 to SPn6 located at a sixth column (i.e., a third sub-pixel column of the sub-pixel group SPG 2). The third sub-pixel column of the sub-pixel group SPG1 and the first sub-pixel column of the sub-pixel group SPG2 are adjacent to each other. In the present embodiment, the first terminal of the switch SW11 is coupled to the sub-pixel SP 11. A first terminal of switch SW12 is coupled to subpixel SP12, and so on.

In the embodiment, the data line DL1 is coupled to the second terminals of the switches SW 11-SWn 1, SW 12-SWn 2 and SW 13-SWn 3 connected to the sub-pixel group SPG 1. The data line DL2 is coupled to the second terminals of the switches SW 14-SWn 4, SW 15-SWn 5, SW 16-SWn 6 connected to the sub-pixel group SPG 2. In the present embodiment, the data line DL1 transmits data S1. The data line DL2 transmits data S2.

In the embodiment, the gate driving circuit 220_1 is coupled to the control terminals of the switches SW 11-SWn 1 and SW 14-SWn 4 (i.e., the first switch). The gate driving circuit 220_1 scans at least a plurality of switches among the switches SW11 to SWn1, SW14 to SWn4 in the first period. The gate driving circuit 220_2 is coupled to control terminals of the switches SW 12-SWn 2, SW 15-SWn 5 (i.e., the second switch). The gate driving circuit 220_2 scans at least a plurality of switches among the switches SW12 to SWn2, SW15 to SWn5 in the second period. The gate driving circuit 220_3 is coupled to control terminals of the switches SW 13-SWn 3, SW 16-SWn 6 (i.e., the third switches). The gate driving circuit 220_2 scans at least a plurality of switches among the switches SW13 to SWn3 and SW16 to SWn6 in the third period.

In the present embodiment, the gate driving circuit 220_1 can be connected to the control terminals of the switches SW11 to SWn1 and SW14 to SWn4 through the scan lines SL (1), … and SL (M-2). The gate driving circuit 220_1 supplies a gate driving signal G (1) to SW11 and SW14 through the scanning line SL (1). Similarly, the gate driving circuit 220_1 provides the gate driving signal G (M-2) to the SWn1 and SWn4 through the scan line SL (M-2). The gate driving circuit 220_2 may be connected to control terminals of the switches SW12 to SWn2 and SW15 to SWn5 through the scan lines SL (2), … and SL (M-1). The gate driving circuit 220_2 supplies the gate driving signal G (2) to the SW12 and SW15 through the scan line SL (2). Similarly, the gate driving circuit 220_2 provides the gate driving signal G (M-1) to the SWn2 and SWn5 through the scan line SL (M-1). The gate driving circuit 220_3 supplies a gate driving signal G (3) to SW13 and SW16 via a scanning line SL (3). Similarly, the gate driving circuit 220_2 provides the gate driving signals g (m) to the SWn3 and SWn6 through the scan lines sl (m).

In the present embodiment, the gate driving circuits 220_1, 220_2, and 220_3 can be integrated into a gate driver.

Referring to fig. 11, 12 and 13, fig. 12 is a timing diagram of data according to a fifth embodiment of the invention. FIG. 13 is a schematic diagram of the display operation of the sub-pixel shown in FIG. 12. In the present embodiment, the data S1 and S2 are provided to the corresponding sub-pixels based on the gate driving signals G (1) -G (m).

In the present embodiment, as in the configuration of fig. 11, the gate driving circuit 220_1 is coupled to the control terminals of the switches corresponding to the (1+3a) th column of sub-pixels. The gate driving circuit 220_2 is coupled to control terminals of a plurality of switches corresponding to a (2+3a) th column of sub-pixels among the plurality of sub-pixels. 220_3 is coupled to control terminals of switches corresponding to a (3+3a) th column of sub-pixels among the plurality of sub-pixels. a is an integer greater than or equal to 0. Taking this embodiment as an example, the gate driving circuit 220_1 is coupled to the control terminals of the switches SW 11-SWn 1 and SW 14-SWn 4 corresponding to the first row of sub-pixels and the fourth row of sub-pixels. The gate driving circuit 220_2 is coupled to the control terminals of the switches SW 12-SWn 2, SW 15-SWn 5 corresponding to the second column of sub-pixels and the fifth column of sub-pixels. The gate driving circuit 220_3 is coupled to the control terminals of the switches SW 13-SWn 3, SW 16-SWn 6 corresponding to the third row of sub-pixels and the sixth row of sub-pixels.

During the first period TD1, the polarity of the data S1 is positive. The data S1 is sequentially provided to the sub-pixels SP11, SP21, … and SPn1 based on the gate driving signals G (1), G (4), … and G (M-2). Therefore, the subpixels SP11, SP21, …, and SPn1 are sequentially displayed based on the column direction D1. During the first period TD1, the polarity of the data S2 is negative. The data S2 is sequentially provided to the sub-pixels SP14, SP24, … and SPn4 based on the gate driving signals G (1), G (4), … and G (M-2). Therefore, the subpixels SP14, SP24, …, and SPn4 are sequentially displayed based on the column direction D1. In the present embodiment, the scanning of the first period TD1 is performed by the gate driving circuit 220_ 1.

During the second period TD2, the polarity of the data S1 is negative. The data S1 is sequentially provided to the sub-pixels SP12, SP22, … and SPn2 based on the gate driving signals G (2), G (5), … and G (M-1). Therefore, the subpixels SP12, SP22, …, and SPn2 are sequentially displayed based on the column direction D1. During the second period TD2, the polarity of the data S2 is positive. The data S2 is sequentially provided to the sub-pixels SP15, SP25, … and SPn5 based on the gate driving signals G (2), G (5), … and G (M-1). Therefore, the subpixels SP15, SP25, …, and SPn5 are sequentially displayed based on the column direction D1. In the present embodiment, the scanning of the second period TD2 is performed by the gate driving circuit 220_ 2.

In the third period TD3, the polarity of the data S1 is positive. The data S1 is sequentially provided to the sub-pixels SP13, SP23, …, SPn3 based on the gate driving signals G (3), G (6), …, G (m). Therefore, the subpixels SP13, SP23, …, and SPn3 are sequentially displayed based on the column direction D1. In the third period TD3, the polarity of the data S2 is negative. The data S2 is sequentially provided to the sub-pixels SP16, SP26, …, SPn6 based on the gate driving signals G (3), G (6), …, G (m). Therefore, the subpixels SP16, SP26, …, and SPn6 are sequentially displayed based on the column direction D1. In the present embodiment, the scanning of the third period TD3 is performed by the gate driving circuit 220_ 3.

In the present embodiment, the polarities of the data S1 received by the adjacent pixel columns of the sub-pixel group SPG1 are opposite to each other. The polarities of the data S2 received by the adjacent pixel columns of the sub-pixel group SPG2 are opposite to each other. The third sub-pixel column of the sub-pixel group SPG1 and the first sub-pixel column of the sub-pixel group SPG2 are adjacent to each other. Therefore, the polarity of the data S1 received by the sub-pixels SP13, SP23, …, and SPn3 in the third period TD3 is opposite to the polarity of the data S2 received by the sub-pixels SP14, SP24, …, and SPn4 in the first period TD 1. Therefore, the wearable display device does not display visual stripes with different brightness.

In the present embodiment, the gate driving circuits 220_1, 220_2, and 220_3 respectively perform a scanning operation along the column direction D1. However, the invention is not limited thereto. In some embodiments, at least one of the gate driving circuits 220_1, 220_2, and 220_3 performs a scan operation along a direction opposite to the column direction D1.

In summary, based on the configuration of the wearable display device of the present invention, the polarity of the data does not need to be frequently inverted. As a result, power consumption of the wearable display device can be reduced. In addition, the polarities of the data received by adjacent sub-pixel columns are opposite to each other. Therefore, the wearable display device does not have visual stripes with different brightness, and the wearable display device has a better visual effect.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wearable display device, comprising:

a sub-pixel array divided into a plurality of sub-pixel groups composed of a plurality of sub-pixels, wherein each of the plurality of sub-pixel groups includes a plurality of sub-pixels located in a plurality of adjacent columns;

a plurality of switches, first ends of which are correspondingly connected with the plurality of sub-pixels in a one-to-one manner;

a plurality of data lines corresponding to the plurality of sub-pixel groups and coupled to second ends of the plurality of switches connected to the corresponding sub-pixel groups;

a first gate driving circuit coupled to control terminals of a plurality of first switches corresponding to a plurality of first sub-pixel columns of the plurality of sub-pixel groups among the plurality of switches, configured to scan at least a plurality of switches among the plurality of first switches during a first period of a frame period; and

a second gate driving circuit coupled to control terminals of a plurality of second switches corresponding to a plurality of second sub-pixel columns of the plurality of sub-pixel groups among the plurality of switches, configured to scan at least a plurality of switches among the plurality of second switches during a second period of the frame period,

during the frame, the polarity of the data received by each of the first sub-pixel columns is the same, the polarity of the data received by each of the second sub-pixel columns is the same, and the polarity of the data received by the first sub-pixel columns is opposite to the polarity of the data received by the second sub-pixel columns.

2. The wearable display apparatus according to claim 1, wherein:

a first sub-pixel group and a second sub-pixel group among the plurality of sub-pixel groups are adjacent to each other, and

the second subpixel column of the first subpixel group and the second subpixel column of the second subpixel group are adjacent to each other.

3. The wearable display device according to claim 1, wherein a polarity rule of data received by the plurality of sub-pixels is inverted during a next frame.

4. The wearable display apparatus according to claim 1, wherein:

during the first period, the first gate driving circuit scans the plurality of first switches along a first column direction, and

during the second period, the second gate driving circuit scans the plurality of second switches along a second column direction.

5. The wearable display device according to claim 4, wherein the first column direction is the same as the second column direction.

6. The wearable display apparatus of claim 4, wherein the first column direction is opposite the second column direction.

7. The wearable display apparatus according to claim 1, wherein:

the first gate driving circuit is coupled to control terminals of a plurality of switches corresponding to a (1+4a) th column of sub-pixels and a (4+4a) th column of sub-pixels among the plurality of sub-pixels,

the second gate driving circuit is coupled to control terminals of a plurality of switches corresponding to the (2+4a) th column of sub-pixels and the (3+4a) th column of sub-pixels among the plurality of sub-pixels, and

a is an integer greater than or equal to 0.

8. The wearable display device according to claim 1, further comprising:

a third gate driving circuit coupled to control terminals of a plurality of third switches corresponding to a plurality of third sub-pixel columns of the plurality of sub-pixel groups among the plurality of switches, configured to scan the plurality of third switches during a third period of the frame period.

9. The wearable display apparatus according to claim 8, wherein:

during the third period, the third gate driving circuit scans the plurality of third switches in one of a first column direction and a second column direction, and

the third period is subsequent to the second period.

10. The wearable display apparatus according to claim 8, wherein:

the polarity of the data received by each of the third sub-pixel columns is the same, and

the polarity of the data received by the plurality of third sub-pixel columns is opposite to the polarity of the data received by the plurality of second sub-pixel columns.

11. The wearable display apparatus according to claim 8, wherein:

the third subpixel column of the first subpixel group and the first subpixel column of the second subpixel group are adjacent to each other.

12. The wearable display apparatus according to claim 1, wherein:

during the first period, the first gate driving circuit scans odd-numbered row switches among the plurality of first switches,

during the second period, the second gate driving circuit scans odd row switches among the plurality of second switches,

in a third period of the frame period, the first gate driving circuit scans even-numbered row switches among the plurality of first switches,

during a fourth period of the frame period, the second gate driving circuit scans even-numbered row switches among the plurality of second switches,

the third period is subsequent to the second period, and

the fourth period is subsequent to the third period.

13. The wearable display device according to claim 1, further comprising:

a storage circuit configured to store a plurality of data required for at least one frame; and

a data driving circuit coupled to the storage circuit and the data lines and configured to provide the data lines with the data.