CN114446259B - Wearable display device - Google Patents

Abstract

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

Description

Wearable display device

Technical field

The present invention relates to a display device, and in particular to a wearable display device with low power consumption and high visual effect.

Background technique

Due to the need for narrow borders, current wearable display devices usually use display mechanisms such as dual gate to save the number of data lines. As for the LCD wearable display device, in order to reduce power consumption, the LCD wearable display device will use column inversion to perform image inversion. However, since two columns of sub-pixels share a data line, users can easily see visual stripes with different brightness on the wearable display device. This makes the wearable display device have poor visual effects.

Contents of the invention

The present invention provides a wearable display device with both low power consumption and high visual effects.

The wearable display device of the present invention includes a sub-pixel array, a plurality of switches, a plurality of data lines, a first gate driving circuit and a second gate driving circuit. The subpixel array is divided into multiple subpixel groups composed of multiple subpixels. Each of the plurality of sub-pixel groups includes a plurality of sub-pixels located in multiple adjacent columns. First ends of the switches are connected to the sub-pixels in a one-to-one manner. 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 to the corresponding sub-pixel groups. The first gate driving circuit is coupled to the 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. The first gate driving circuit scans at least a plurality of switches among the plurality of first switches during a first period of the frame period. The second gate driving circuit is coupled to the control terminals of the plurality of second switches corresponding to the plurality of second sub-pixel columns of 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 the frame period, the polarity of the data received by each of the plurality of first sub-pixel columns is the same, the polarity of the data received by each of the plurality of second sub-pixel columns is the same, and the polarity of the data received by each of the plurality of second sub-pixel columns is the same. The polarity of the data received by the first sub-pixel columns is opposite to the polarity of the data received by the plurality of second sub-pixel columns.

Based on the above, the sub-pixel array of the wearable display device is divided into multiple sub-pixel groups composed of multiple 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 data received by the first sub-pixel column have the same polarity, and the data received by the second sub-pixel column have the same polarity. Based on the above configuration, the polarity of the data does not need to be inverted frequently. In this way, the 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. In this way, visual stripes with different brightness will not appear on the wearable display device, and the wearable display device will have better visual effects.

In order to make the above-mentioned features and advantages of the present invention more obvious and understandable, embodiments are given below and described in detail with reference to the accompanying drawings.

Description of drawings

Figure 1 is a schematic diagram of a wearable display device according to a first embodiment of the present invention;

Figure 2 is another schematic diagram of a wearable display device according to the first embodiment of the present invention;

Figure 3 is a data timing diagram according to the first embodiment of the present invention;

Figure 4 is a schematic diagram of a display operation based on the sub-pixel shown in Figure 3;

Figure 5 is a data timing diagram according to the second embodiment of the present invention;

Figure 6 is a schematic diagram of a display operation based on the sub-pixel shown in Figure 5;

Figure 7 is a data timing diagram according to the third embodiment of the present invention;

Figure 8 is a schematic diagram of a display operation based on the sub-pixel shown in Figure 7;

Figure 9 is a data timing diagram according to the fourth embodiment of the present invention;

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

Figure 11 is a schematic diagram of a wearable display device according to a second embodiment of the present invention;

Figure 12 is a data timing diagram according to the fifth embodiment of the present invention;

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

Explanation of reference signs

110, 210: sub-pixel array

120_1, 120_2, 220_1, 220_2, 220_3: Gate drive circuit

130: Storage circuit

140: Data drive circuit

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

D1, D2: column direction

DL1～DL3: data lines

G(1)～G(M): Gate drive signal

S1～S3: data

SL(1)～SL(M): Scan line

SP11～SPn6: sub-pixel

SPG1～SPG3: sub-pixel group

SW11～SWn6: switch

TD1: first period

TD2: Second period

TD3: The third period

TD4: The fourth period

+, -: polarity

Detailed ways

Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same component numbers are used in the drawings and descriptions to refer to the same or similar parts.

Please refer to FIG. 1 , which is a schematic diagram of a wearable display device according to a first embodiment of the present invention. In this embodiment, the wearable display device includes a sub-pixel array 110, multiple switches, multiple data lines, and gate driving circuits 120_1 and 120_2. For ease of explanation, this embodiment illustrates switches SW11 to SWn6 and data lines DL1 to DL3, and the invention is not limited thereto. In this embodiment, the sub-pixel array 110 is divided into multiple sub-pixel groups composed of multiple sub-pixels. Taking this embodiment as an example, the sub-pixel array 110 includes sub-pixels SP11 to SPn6 (the invention is not limited thereto). The subpixel array 110 is divided into subpixel groups SPG1 to SPG3. Each of the subpixel groups SPG1 to SPG3 includes a plurality of subpixels located in a plurality of adjacent columns. For example, the sub-pixel group SPG1 includes sub-pixels SP11-SPn1 located in the first column and sub-pixels SP12-SPn2 located in the 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 located in the fifth column and subpixels SP16 to SPn6 located in the sixth column.

In this embodiment, the first ends of the switches SW11 to SWn6 are connected to the sub-pixels SP11 to SPn6 in a one-to-one manner. For example, the first terminal of the switch SW11 is coupled to the sub-pixel SP11. The first end of switch SW12 is coupled to sub-pixel SP12, and so on.

Data lines DL1 to DL3 correspond to subpixel groups SPG1 to SPG3. The data lines DL1 to DL3 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 ends of the switches SW11˜SWn1 and SW12˜SWn2 connected to the sub-pixel group SPG1. The data line DL2 is coupled to the second ends of the switches SW13˜SWn3 and SW14˜SWn4 connected to the sub-pixel group SPG2. The data line DL3 is coupled to the second ends of the switches SW15˜SWn5 and SW16˜SWn6 connected to the sub-pixel group SPG3. In this embodiment, the data line DL1 transmits the data S1. Data line DL2 transmits data S2. Data line DL3 transmits data S3.

In this embodiment, the gate driving circuit 120_1 is coupled to the control terminals of the plurality of first switches corresponding to the plurality of first sub-pixel columns of the sub-pixel groups SPG1 to SPG3. For example, the first subpixel column of the subpixel group SPG1 includes subpixels SP11 to SPn1. The first subpixel column of the subpixel group SPG2 includes subpixels SP14 to SPn4. The first subpixel column of the subpixel group SPG3 includes subpixels SP15 to SPn5. The gate driving circuit 120_1 is coupled to the control terminals of the switches SW11˜SWn1, SW14˜SWn4, SW15˜SWn5 (ie, the first switch). Therefore, the gate driving circuit 120_1 scans at least a plurality of switches SW11 to SWn1, SW14 to SWn4, and SW15 to SWn5 in the first period of the frame period.

In this embodiment, the gate driving circuit 120_2 is coupled to the control terminals of the plurality of second switches corresponding to the plurality of second sub-pixel columns of the sub-pixel groups SPG1 to SPG3. For example, the second subpixel column of the subpixel group SPG1 includes subpixels SP12 to SPn2. The second subpixel column of the subpixel group SPG2 includes subpixels SP13 to SPn3. The second subpixel column of the subpixel group SPG3 includes subpixels SP16 to SPn6. The gate driving circuit 120_2 is coupled to the control terminals of the switches SW12˜SWn2, SW13˜SWn3, SW16˜SWn6 (ie, the second switch). The gate driving circuit 120_2 scans at least a plurality of 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 of the switches SW11~SWn1, SW14~SWn4, SW15~SWn5 through the scanning lines SL(1), SL(3), ..., SL(M-1). end. The gate driving circuit 120_1 provides the gate driving signal G(1) to SW11, SW14, and SW15 through the scanning line SL(1). The gate driving circuit 120_1 provides the gate driving signal G(3) to SW21, SW24, SW25 through the scanning 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˜SWn2, SW13˜SWn3, and SW16˜SWn6 through the scan lines SL(2), SL(4), ..., SL(M). The gate driving circuit 120_2 provides the gate driving signal G(2) to SW12, SW13, and SW16 through the scanning line SL(2). The gate driving circuit 120_2 provides the gate driving signal G(4) to SW22, SW23, SW26 through the scanning line SL(4), and so on.

During the frame period, the data S1 to S3 received by the first sub-pixel column all have the same polarity. The data S1 to S3 received by the second sub-pixel column all have the same polarity. In addition, the polarities of the data S1 - S3 received by the first sub-pixel column are opposite to the polarities of the data S1 - S3 received by the plurality of 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 SPG3. The gate driving circuit 120_1 scans at least a plurality of switches SW11 to SWn1, SW14 to SWn4, and SW15 to SWn5 in the first period. The gate driving circuit 120_2 scans at least a plurality of switches SW12 to SWn2, SW13 to SWn3, and SW16 to SWn6 during the second period of the frame period. During the same frame period, the data S1 to S3 received by the first subpixel column have the same polarity, and the data S1 to S3 received by the second subpixel column have the same polarity. Therefore, based on the above configuration, 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. In this way, the power consumption of the wearable display device can be reduced. In addition, the polarities of the data S1 - S3 received by the first sub-pixel column are opposite to the polarities of the data S1 - S3 received by the second sub-pixel column. In this way, visual stripes with different brightness will not appear on the wearable display device, and the wearable display device will have better visual effects.

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

Please refer to FIG. 2 , which is another schematic diagram of a wearable display device according to the first embodiment of the present invention. In this 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 SW11 to SWn6, the data lines DL1 to DL3, and the gate driving circuits 120_1 and 120_2 have been clearly explained in the embodiment of FIG. 1 and will not be repeated here. The storage circuit 130 stores data S1 to S3 required for at least one frame (picture). In this embodiment, the storage circuit 130 stores data S1 to S3 required for a single frame. The storage circuit 130 may be a random access memory (Random Access Memory, RAM) or other access memory.

In this embodiment, the data driving circuit 140 is coupled to the memory circuit 130 and the data lines DL1˜DL3. The data driving circuit 140 provides the data S1 to S3 stored in the storage circuit 130 to the data lines DL1 to DL3.

Next, multiple operations of the wearable display device shown in FIG. 1 will be described.

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

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

In this embodiment, as shown in the configuration of FIG. 1 , the gate driving circuit 120_1 is coupled to the control terminals of a plurality of switches corresponding to the sub-pixels in the (1+4a)-th column and the sub-pixels in the (4+4a)-th column. The gate driving circuit 120_2 is coupled to the control terminals of the switches corresponding to the (2+4a)-th column sub-pixels and the (3+4a)-th column 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 SW11˜SWn1, SW14˜SWn4, and SW15˜SWn5 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 the control terminals of the switches SW12˜SWn2, SW13˜SWn3, and SW16˜SWn6 corresponding to the second column of sub-pixels, the third column of sub-pixels, and the sixth column 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˜S3.

In the first period TD1 of the frame period, the polarity of the data S1 is positive polarity (marked as "+"). During the first period TD1, the data S1 is sequentially provided to the sub-pixels SP11, SP21, ..., SPn1 based on the gate driving signals G(1), G(3), ..., G(M-1). In other words, the switches SW11, SW21, ..., SWn1 are scanned along the column direction D1. Therefore, the sub-pixels SP11, SP21, ..., SPn1 of the sub-pixel column C11 are displayed sequentially based on the column direction D1. In this embodiment, scanning in the first period TD1 is performed by the gate driving circuit 120_1.

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

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

It should be noted 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, during the first period TD1, the wearable display device does not display visual stripes with different brightness.

In the second period TD2 of the frame period, the polarity of the data S1 is inverted to negative polarity. During the second period TD2, the data S1 is sequentially provided to the sub-pixels SP12, SP22, ..., 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 sub-pixels SP12, SP22, ..., SPn2 of the sub-pixel column C12 are displayed sequentially based on the column direction D1. In this embodiment, scanning in the second period TD2 is performed by the gate driving circuit 120_2.

In the second period TD2, the polarity of data S2 is positive. During the second period TD2, the data S2 is sequentially provided to the sub-pixels SP13, SP23, ..., 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 sub-pixels SP13, SP23, ..., SPn3 of the sub-pixel column C22 are displayed sequentially based on the column direction D1.

It should be noted that sub-pixel column C22 is adjacent to 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, during the second period TD2, the wearable display device does not display visual stripes with different brightness.

In the second period TD2, the polarity of data S3 is negative. During the second period TD2, the data S3 is sequentially provided to the sub-pixels SP16, SP26, ..., 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 sub-pixels SP16, SP26, ..., SPn6 of the sub-pixel column C32 are displayed sequentially based on the column direction D1.

When the second period TD2 ends, the current frame period ends. In the next frame period, the polarity rules of the data S1 to S3 received by the sub-pixels SP11 to SPn6 are reversed. That is to say, in the next frame period, the polarity of data S1 in the first period TD1 is negative polarity. The polarity of data S2 in the first period TD1 is positive polarity. The polarity of data S3 in the first period TD1 is negative polarity. The polarity of data S1 in the second period TD2 is positive polarity. The polarity of data S2 in the second period TD2 is negative polarity. The polarity of data S3 in the second period TD2 is positive polarity.

Please refer to FIG. 1, FIG. 5 and FIG. 6 at the same time. FIG. 5 is a data timing diagram according to the second embodiment of the present invention. FIG. 6 is a schematic diagram of a display operation based on the sub-pixel shown in FIG. 5 . In this 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 data S1 is negative polarity. During the first period TD1, the data S1 is sequentially provided to the sub-pixels SP12, SP22, ..., 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 sub-pixels SP12, SP22, ..., SPn2 are displayed sequentially based on the column direction D1.

In the first period TD1, the polarity of data S2 is positive polarity. During the first period TD1, the data S2 is sequentially provided to the sub-pixels SP13, SP23, ..., SPn3 based on the gate driving signals G(2), G(2), ..., G(M). In other words, the switches SW13, SW23, ..., SWn3 are scanned along the column direction D1. Therefore, the sub-pixels SP13, SP23, ..., SPn3 are displayed sequentially based on the column direction D1. During the first period TD1, the polarity of the data S2 received by the sub-pixels SP13, SP23, ..., SPn3 is opposite to the polarity of the data S1 received by the sub-pixels SP12, SP22, ..., SPn2. Therefore, during the first period TD1, the wearable display device does not display visual stripes with different brightness.

In the first period TD1, the polarity of data S3 is negative. During the first period TD1, the data S3 is sequentially provided to the sub-pixels SP16, SP26, ..., 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 sub-pixels SP16, SP26, ..., SPn6 are displayed sequentially based on the column direction D1.

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

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

In the second period TD2, the polarity of data S3 is positive. During the second period TD2, the data S3 is sequentially provided to the sub-pixels SP15, SP25, ..., SPn5 based on the gate driving signals G G(1), G(3), ..., G(M-1). In other words, the switches SW15, SW25, ..., SWn5 are scanned along the column direction D1. Therefore, the sub-pixels SP15, SP25, ..., SPn5 are displayed sequentially based on the column direction D1. During the second period TD2, the polarity of the data S3 received by the sub-pixels SP15, SP25, ..., SPn5 is opposite to the polarity of the data S2 received by the sub-pixels SP14, SP24, ..., SPn4. Therefore, during the first period TD1, the wearable display device does not display visual stripes with different brightness.

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

Please refer to FIG. 1, FIG. 7 and FIG. 8 at the same time. FIG. 7 is a data timing diagram according to the third embodiment of the present invention. FIG. 8 is a schematic diagram of a display operation based on the sub-pixel shown in FIG. 7 . In this embodiment, the operation of TD1 during the first period is similar to the operation of FIG. 1 , FIG. 3 and FIG. 4 , and therefore will not be described again.

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

In the second period TD2, the polarity of the data S2 is inverted to negative polarity. The data S2 is sequentially provided to the sub-pixels SPn3, ..., SP23, SP13 based on the gate driving signals G(M), ..., G(4), G(2). In other words, the switches SWn3, ..., SW23, and SW13 are scanned along the column direction D2. Therefore, the sub-pixels SPn3, ..., SP23, SP13 are displayed sequentially based on the column direction D2. The polarity of the data S2 received by the sub-pixels SPn3, ..., SP23, SP13 is opposite to the polarity of the data S1 received by the sub-pixels SPn2, ..., SP22, SP12. Therefore, during the second period TD2, the wearable display device does not display visual stripes with different brightness.

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

Please refer to FIG. 1, FIG. 9 and FIG. 10 at the same time. FIG. 9 is a data timing diagram according to the fourth embodiment of the present invention. FIG. 10 is a schematic diagram of a display operation based on the sub-pixel shown in FIG. 9 . This embodiment shows sub-pixels SP11 to SP86. That is, n shown in Figure 1 is equal to 8. In this embodiment, the frame period is divided into four 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 (ie, the first switches). During the second period TD2, the gate driving circuit 120_2 scans odd-numbered row switches among the switches SW12 to SWn2, SW13 to SWn3, and SW16 to SWn6 (ie, the second switches). In the 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 SW85. In the fourth period after the third period, the gate driving circuit 120_2 scans the even-numbered row switches among SW12 to SWn2, SW13 to SWn3, and SW16 to SWn6.

Specifically, taking this embodiment as an example, during the first period TD1, the polarity of the data S1 is positive polarity. The data S1 is sequentially provided to the sub-pixels SP11, SP31, SP51, SP71 based on the gate driving signals G(1), G(5), ..., G(M-3). Since n is equal to 8, M is equal to 16. In 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, SP74 based on the gate driving signals G(1), G(5), ..., G(M-3). In the first period TD1, the polarity of data S3 is positive polarity. The data S3 is sequentially provided to the sub-pixels SP15, SP35, SP55, SP75 based on the gate driving signals G(1), G(5), ..., G(M-3).

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

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

In the fourth period TD4, the polarity of 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). In the fourth period TD4, the polarity of 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). In the fourth period TD4, the polarity of 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 period, the polarity rules of data S1 to S3 are reversed.

Please refer to FIG. 11 , which is a schematic diagram of a wearable display device according to a second embodiment of the present invention. In this embodiment, the wearable display device includes a sub-pixel array 210, multiple switches, multiple data lines, and gate driving circuits 220_1, 220_2, and 220_3. For ease of explanation, this embodiment illustrates switches SW11 to SWn6 and data lines DL1 and DL2, but the invention is not limited thereto. In this embodiment, the sub-pixel array 210 includes sub-pixels SP11 to SPn6 (the invention is not limited thereto). The subpixel array 210 is divided into subpixel groups SPG1 and SPG2. For example, the sub-pixel groups SPG1 and SPG2 are adjacent to each other. The sub-pixel group SPG1 includes sub-pixels SP11 to SPn1 located in the first column (ie, the first sub-pixel column of the sub-pixel group SPG1), and sub-pixels SP12-SPn2 located in the second column (ie, the second column of the sub-pixel group SPG1). sub-pixel column) and the sub-pixels SP13 to SPn3 located in the third column (ie, the third sub-pixel column of the sub-pixel group SPG1). The sub-pixel group SPG2 includes sub-pixels SP14 to SPn4 located in the fourth column (ie, the first sub-pixel column of the sub-pixel group SPG2), and sub-pixels SP15-SPn5 located in the fifth column (ie, the second sub-pixel column of the sub-pixel group SPG2). sub-pixel column) and the sub-pixels SP16 to SPn6 located in the sixth column (ie, the third sub-pixel column of the sub-pixel group SPG2). The third subpixel column of the subpixel group SPG1 and the first subpixel column of the subpixel group SPG2 are adjacent to each other. In this embodiment, the first terminal of the switch SW11 is coupled to the sub-pixel SP11. The first end of switch SW12 is coupled to sub-pixel SP12, and so on.

In this embodiment, the data line DL1 is coupled to the second ends of the switches SW11˜SWn1, SW12˜SWn2, and SW13˜SWn3 connected to the sub-pixel group SPG1. The data line DL2 is coupled to the second ends of the switches SW14˜SWn4, SW15˜SWn5, and SW16˜SWn6 connected to the sub-pixel group SPG2. In this embodiment, the data line DL1 transmits the data S1. Data line DL2 transmits data S2.

In this embodiment, the gate driving circuit 220_1 is coupled to the control terminals of the switches SW11 to SWn1 and SW14 to SWn4 (ie, the first switch). The gate drive circuit 220_1 scans at least a plurality of switches SW11 to SWn1 and SW14 to SWn4 in the first period. The gate driving circuit 220_2 is coupled to the control terminals of the switches SW12˜SWn2 and SW15˜SWn5 (ie, the second switch). The gate drive circuit 220_2 scans at least a plurality of switches SW12 to SWn2 and SW15 to SWn5 in the second period. The gate driving circuit 220_3 is coupled to the control terminals of the switches SW13˜SWn3 and SW16˜SWn6 (ie, the third switch). The gate drive circuit 220_2 scans at least a plurality of switches SW13 to SWn3 and SW16 to SWn6 in the third period.

In this embodiment, the gate driving circuit 220_1 can be connected to the control terminals of the switches SW11˜SWn1 and SW14˜SWn4 through the scanning lines SL(1), ..., SL(M-2). The gate driving circuit 220_1 provides the gate driving signal G(1) to SW11 and SW14 through the scanning line SL(1). By the same token, the gate driving circuit 220_1 provides the gate driving signal G(M-2) to SWn1 and SWn4 through the scanning line SL(M-2). The gate driving circuit 220_2 can be connected to the control terminals of the switches SW12˜SWn2 and SW15˜SWn5 through the scan lines SL(2), ..., SL(M-1). The gate driving circuit 220_2 provides the gate driving signal G(2) to SW12 and SW15 through the scanning line SL(2). By the same token, the gate driving circuit 220_2 provides the gate driving signal G(M-1) to SWn2 and SWn5 through the scanning line SL(M-1). The gate driving circuit 220_3 provides the gate driving signal G(3) to SW13 and SW16 through the scanning line SL(3). By the same token, the gate driving circuit 220_2 provides the gate driving signal G(M) to SWn3 and SWn6 through the scanning line SL(M).

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

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

In this embodiment, as shown in the configuration of FIG. 11 , the gate driving circuit 220_1 is coupled to the control terminals of a plurality of switches corresponding to the (1+3a)-th column sub-pixels. The gate driving circuit 220_2 is coupled to the control terminals of the switches corresponding to the (2+3a)th column sub-pixels among the plurality of sub-pixels. 220_3 is coupled to the control terminals of a plurality of switches corresponding to the (3+3a)th column 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 SW11˜SWn1 and SW14˜SWn4 corresponding to the first column of sub-pixels and the fourth column of sub-pixels. The gate driving circuit 220_2 is coupled to the control terminals of the switches SW12˜SWn2 and SW15˜SWn5 corresponding to the sub-pixels in the second column and the sub-pixels in the fifth column. The gate driving circuit 220_3 is coupled to the control terminals of the switches SW13˜SWn3 and SW16˜SWn6 corresponding to the sub-pixels in the third column and the sub-pixels in the sixth column.

In the first period TD1, the polarity of the data S1 is positive. The data S1 is sequentially provided to the sub-pixels SP11, SP21, ..., SPn1 based on the gate driving signals G(1), G(4), ..., G(M-2). Therefore, the sub-pixels SP11, SP21, ..., SPn1 are displayed sequentially based on the column direction D1. In the first period TD1, the polarity of the data S2 is negative. The data S2 is sequentially provided to the sub-pixels SP14, SP24, ..., SPn4 based on the gate driving signals G(1), G(4), ..., G(M-2). Therefore, the sub-pixels SP14, SP24, ..., SPn4 are displayed sequentially based on the column direction D1. In this embodiment, scanning in the first period TD1 is performed by the gate driving circuit 220_1.

In the second period TD2, the polarity of the data S1 is negative. The data S1 is sequentially provided to the sub-pixels SP12, SP22, ..., SPn2 based on the gate driving signals G(2), G(5), ..., G(M-1). Therefore, the sub-pixels SP12, SP22, ..., SPn2 are displayed sequentially based on the column direction D1. In the second period TD2, the polarity of data S2 is positive. The data S2 is sequentially provided to the sub-pixels SP15, SP25, ..., SPn5 based on the gate driving signals G(2), G(5), ..., G(M-1). Therefore, the sub-pixels SP15, SP25, ..., SPn5 are displayed sequentially based on the column direction D1. In this embodiment, scanning in the second period TD2 is performed by the gate driving circuit 220_2.

In the third period TD3, the polarity of 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 sub-pixels SP13, SP23, ..., SPn3 are displayed sequentially based on the column direction D1. In the third period TD3, the polarity of 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 sub-pixels SP16, SP26, ..., SPn6 are displayed sequentially based on the column direction D1. In this embodiment, the scanning of the third period TD3 is performed by the gate driving circuit 220_3.

In this embodiment, the polarities of the data S1 received by adjacent pixel columns of the sub-pixel group SPG1 are opposite to each other. The polarities of the data S2 received by adjacent pixel columns of the sub-pixel group SPG2 are opposite to each other. The third subpixel column of the subpixel group SPG1 and the first subpixel column of the subpixel group SPG2 are adjacent to each other. Therefore, the polarity of the data S1 received by the sub-pixels SP13, SP23,..., SPn3 in the third period TD3 is opposite to the polarity of the data S2 received by the sub-pixels SP14, SP24,..., SPn4 in the first period TD1. . Therefore, the wearable display device does not display visual stripes with different brightness.

In this embodiment, the gate driving circuits 220_1, 220_2, and 220_3 respectively perform scanning operations along the column direction D1. However, the present invention is not limited to this. In some embodiments, at least one of the gate driving circuits 220_1, 220_2, and 220_3 performs a scanning operation in 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 data does not need to be frequently reversed. In this way, the power consumption of the wearable display device can be reduced. In addition, the polarities of data received by adjacent sub-pixel columns are opposite to each other. In this way, visual stripes with different brightness will not appear on the wearable display device, and the wearable display device will have better visual effects.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features can be equivalently replaced; and these modifications or substitutions do not deviate from the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present invention. scope.

Claims (12)

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 connected with the plurality of sub-pixels in a one-to-one manner;

the plurality of data lines are corresponding to the plurality of sub-pixel groups and are coupled to the second ends of the plurality of switches connected with 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 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 the plurality of second switches during a second period of the frame period,

wherein the plurality of data lines extend along a first column direction respectively,

wherein the plurality of first switches are arranged along the first column direction and the plurality of second switches are arranged along the first column direction,

wherein during the same frame, the polarity of the data received by each of the plurality of first sub-pixel columns is the same and does not change, the polarity of the data received by each of the plurality of second sub-pixel columns is the same and does not change, and the polarity of the data received by the plurality of first sub-pixel columns is opposite to the polarity of the data received by the plurality of second sub-pixel columns,

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

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

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 apparatus of 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 the first column direction is the same as the second column direction.

5. The wearable display apparatus according to claim 1, wherein the first column direction is opposite to the second column direction.

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

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

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

a is an integer greater than or equal to 0.

7. The wearable display apparatus 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, is configured to scan the plurality of third switches during a third period of the frame period.

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

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

the third period is subsequent to the second period.

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

the polarities of the data received by each of the plurality of third sub-pixel columns are the same, and

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

10. The wearable display apparatus according to claim 7, 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 third subpixel column of the first subpixel group and the first subpixel column of the second subpixel group are adjacent to each other.

11. 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-numbered row switches among the plurality of second switches,

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

in 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 after the second period, and

the fourth period is subsequent to the third period.

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

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

and a data driving circuit coupled to the memory circuit and the plurality of data lines and configured to provide the plurality of data to the plurality of data lines.