This application claims priority to Chinese Application Serial Number 201610004021.X, filed Jan. 4, 2016, the disclosures of which are incorporated herein by reference in their entireties.
The present disclosure relates to a verification apparatus and a verification method. More particularly, the present disclosure relates to a verification apparatus and a verification method for verifying qualities of touch display panels.
In a general process of manufacturing a display panel, one verification procedure is required to light up the display panel, so as to check the equality of the display panel. Currently, a usual verification approach for display panel includes connecting a common mode voltage signal (Vcom) to testing probes of the display panel and utilizing the Vcom signal to light up the display panel. However, aforesaid verification approach is not suitable for latest models of touch display panels.
The disclosure provides a verification apparatus and a verification method for verification of touch display panels.
It is to be understood that both the foregoing general description and the following detailed description are by examples, and are intended to provide further explanation of the disclosure as claimed.
According to an embodiment of this disclosure, a verification apparatus suitable for touch display panel is proposed. The touch display panel includes multiple divided partitions. The verification apparatus includes signal generating circuit and verification switch circuit. The signal generating circuit is used to generate verification voltage. The verification switch circuit is used to simultaneously send the verification voltage to at least two of the multiple divided partitions, and includes multiple switch units which are coupled to divided partitions and signal generating circuit.
A verification method suitable for touch display panel is proposed according to another embodiment of this disclosure. The verification method includes simultaneously sending verification voltage to at least two of multiple divided partitions, light-emitting separately at least two divided partitions according to verification voltage, and judging whether the divided partition functions normally according to the light-emitting condition of the divided partition.
With the verification apparatus, verifications toward touch display panel can be conducted to light up the divided partitions, and to find whether adjacent divided partitions are short-connected or not.
The disclosure can be more fully understood by reading the following detailed description of the embodiment, with reference made to the accompanying drawings as follows:
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. Specific examples of components and arrangements are described below to simplify the present disclosure. These are, of course, merely examples and are not intended to be limiting. In addition, the present disclosure may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
Reference is made to
Reference is made to
Each of the divided partitions 201˜209 are different parts of the touch display panel 200. In practices, various driving signals are required to control touch function and display function on a large-scale panel. Controlling the whole large-scale panel with one singular driving circuit leads to higher costs for implementing the powerful driving circuit, and also causes difference between response times on different rows/columns of pixels. In practical applications, the touch display panel 200 is often separated into multiple smaller divided partitions 201˜209, such that each divided partitions 201˜209 will be easier to drive and control. Every single divided partitions 201˜209 is connected to corresponding control circuit (not shown in the figure).
Each switch unit SW1˜SW9 in the verification switch circuit 120 is respectively connected to one corresponding divided partition. As shown in
On the other hand, the switch units SW1˜SW9 of the verification switch circuit 120 are coupled to the signal generating circuit 130 on the other side. According to the control signal CS from the control circuit 110, the verification switch circuit 120 sends verification voltage V1 to the divided partitions 201˜209. Switch units SW1˜SW9 are manipulated according to the logic level of control signal CS.
Reference is made to
Step S304, as shown in
For instance, aforesaid working circuit includes a gate driving circuit (for displaying function), a data driving circuit, and a touch sensing circuit (for touch-sensing function). The gate driving circuit is configured to control transistor switches in divided partitions of the panel. When the transistor switches is on, data driving circuit sends the data that control gray scale and brightness to pixel capacitors in divided partitions of the panel. As mentioned above, since the control signal CS has been adjusted to low-logic level, the switch units SW1˜SW9 are turned off, and the verification apparatus 100 stop sending the verification voltage V1 to touch display panel 200, so as to terminates the verification. The verification apparatus 100 is separated from the whole touch display panel, and the verification apparatus 100 will no longer conduct any verification to the touch display panel 200. The signal wirings connected to each divided partition will be used to send signals required by the working circuit, such as the gate driving circuit, the data driving circuit, and/or the touch sensing circuit.
Reference is made to
After the function is confirmed to be normal, in step S306, the control signal CS generated by the control circuit 110 is adjusted to low-logic level. Meanwhile, the switch units SW1˜SW9 in the verification switch circuit 120 is turned off, and the signal generating circuit 130 stop sending the verification voltage V1 to the divided partitions 201˜209 of the touch display panel 200.
In other words, at the moment there is no signal transmission between the verification apparatus 100 and the divided partitions 201˜209 of the touch display panel 200. In the following step S308, the working circuit (not shown in the figure) will replace the verification apparatus 100. The working circuit controls the divided partitions 201˜209 of the touch display panel 200. For example, the input and output interface of the working circuit can be connected to signal circuits of the divided partitions 201˜209.
In some embodiments, after the verification is finished, the signal wirings of each divided partitions 201˜209 remain electrical connected to the verification apparatus 100, but the switch units SW1˜SW9 in the verification switch circuit 120 will be turned off. Therefore, the signal generating circuit 130 will not affect the signal wirings of each divided partitions 201˜209. In some other embodiments, after the verification is finished, the electrical connections between the verification apparatus 100 and the signal circuits of each divided partitions 201˜209 are removed/interrupted by laser cutting.
Reference is made to
In the embodiment shown in
To detect whether adjacent divided partitions or the signal wirings thereof are short-connected, different verification voltages are provided to the two adjacent divided partitions in some embodiments. If two adjacent divided partitions receive different verification voltages and display at different brightness, the two adjacent divided partitions are regarded as functioning normally. Two adjacent divided partitions suppose to receive different verification voltages by default and display at different brightness. However, when the divided partitions are short-connected, the divided partitions will receives the same verification voltage and display at the same brightness.
For instance, reference is made to
As shown in
When the signal generating circuit 130 simultaneously sends the verification voltages V1 and V2 respectively to the divided partitions on the odd and even rows. The brightness of the divided partitions on the odd rows are the same, and the brightness of the divided partitions on the even rows are also the same but different from that of the odd rows.
In this situation, there is no short circuit between two vertical-adjacent divided partitions of the touch display panel 400. Step S308 is executed to adjust the control signal CS generated by the control circuit 110 to low-logic level to turn off the switch units in the verification switch circuit 120, then the verification voltages V1 and V2 will not be sent to the divided partitions 401˜416 of the touch display panel 400. Another circuit (that is, the working circuit) takes over the control of the divided partitions in step S310. However, in another situation as shown in
The above embodiment can be used to confirm whether there is a short circuit between the up and down adjacent divided partitions. Nonetheless, by this method, whether there is a short circuit between divided partitions in odd and even rows or between left and right adjacent divided partitions cannot be validated.
In another embodiment, as shown in
When the signal generating circuit 130 simultaneously send the verification voltages V1 and V2 respectively to the divided partitions on the odd and even columns. The brightness of the divided partitions on the odd columns are the same, and the brightness of the divided partitions on the even columns are also the same but different from that of the odd columns.
In this situation the left and right adjacent divided partitions of the touch display panel 400 have no short circuit. However, in another situation as shown in
The above embodiment can be used to confirm whether there is a short circuit between the left and right adjacent divided partitions. Nonetheless, by this method, whether there is a short circuit between divided partitions in odd and even columns or between up and down adjacent divided partitions cannot be validated.
In still another embodiment, as shown in
Comparing to
At this moment any arbitrary adjacent divided partitions in odd and even columns receive different verification voltage. For example, the divided partition 401 on the odd column and the divided partition 405 on the even column receive verification voltages V1 and V2 respectively. The divided partition 402 on the odd column and the divided partition 406 on the even column receive verification voltages V2 and V1 respectively.
By the same method, alternately send the verification voltages V1 and V2 to the divided partitions 409˜412 on the odd column, and alternately send the verification voltages V2 and V1 to the divided partitions 413˜415 on the even column.
In this situation, as shown in
For instance, the brightness of the divided partition 407 on the even column is different from the brightness of the divided partition 406 (i.e., the partition adjacent to the divided partition 407 on the top side) and the brightness of the divided partition 408 (i.e., the partition adjacent to the divided partition 407 on the bottom side). Moreover, the brightness of the divided partition 407 is different from the brightness of the divided partition 403 (i.e., the partition adjacent to the divided partition 407 on the left side) and the divided partition 411 (i.e., the partition adjacent to the divided partition 407 on the right side). Then there is no short circuit between the divided partition 407 and the divided partitions 406/408/403/411 in the neighborhood along four directions.
For another instance, the brightness of the divided partition 410 on the even column is different from the brightness of the upside/downside adjacent divided partitions 409 and 411. Moreover, the brightness of the divided partition 410 is different from the brightness of the leftside/rightside adjacent divided partitions 406 and 414. Then there is no short circuit between the divided partition 410 and the neighboring divided partitions 409, 411, 406, and 414 in four directions.
In another situation, as shown in
When it is confirmed that the touch display panel functions normally and there is no short circuit, as mentioned above, in step S306, the control signal CS generated by the control circuit 110 is adjusted to low-logic level (such as 0). At this moment, the switch units in the verification switch circuit 120 is turned off, and the sending of verification voltages from the signal generating circuit 130 to the divided partitions 401˜416 of the touch display panel 400 is stopped. In the following step S208, another circuit (which is the working circuit) will replace the verification apparatus 100, and control the divided partitions 401˜416 of the touch display panel 400 separately. The mechanism of how the working circuit controls touch display panel is the same as it is mentioned previously.
Comparing to the verification voltage V1 and V2 shown in
Comparing to
For example, as shown in
The abovementioned locations of short circuits shown in
Based on the abovementioned contents and embodiments, this disclosure provides a verification apparatus. By using the verification apparatus, light-emitting verification and short circuit verification for the divided partitions of the touch display panel can be conducted.
Although the present disclosure has been described in considerable detail with reference to certain embodiments thereof, other embodiments are possible. Therefore, the spirit and scope of the appended claims should not be limited to the description of the embodiments contained herein.
It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the present disclosure without departing from the scope or spirit of the disclosure. In view of the foregoing, it is intended that the present disclosure cover modifications and variations of this disclosure provided they fall within the scope of the following claims.
Number | Date | Country | Kind |
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2016 1 0004021 | Jan 2016 | CN | national |
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Number | Date | Country | |
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20170192606 A1 | Jul 2017 | US |