TWI569020B - Displaying device and testing method thereof - Google Patents

Description

Display device and display device test method

The present invention relates to a display technology, and more particularly to a display device and test method.

When the display device is manufactured, once the film on-film (COF) process is completed, the function of the display device needs to be tested. During the test, the control board needs to be connected to the connection board through the cable, and after the connection line is connected with the connection board, it is determined by manual confirmation whether the connection state of the cable and the connection board is normal.

If the manual judgment is wrong, the abnormal connection condition between the cable and the connecting board, for example, the oblique insertion condition of the cable and the pin of the connecting board, may exist in the display device. As such, during testing, voltage is supplied to the misplaced pin, causing damage to the product and requiring significant cost for repairs.

It can be seen that the above existing methods obviously have inconveniences and defects, and need to be improved. In order to solve the above problems, the relevant fields have not tried their best to find a solution, but for a long time, no suitable solution has been developed.

SUMMARY OF THE INVENTION The Summary of the Disclosure is intended to provide a basic understanding of the present disclosure. This Summary is not an extensive overview of the disclosure, and is not intended to be an

It is an object of the present invention to provide a display device and test method for improving the problems of the prior art.

In order to achieve the above object, a technical aspect of the present invention relates to a display device. The display device comprises a display panel, at least one connection module and a control module. The connection module is coupled to the display panel. The connection module includes a plurality of pins. The pin includes an input pin and an output pin, and the input pin is electrically coupled to the output pin. The control module is configured to receive the detection signal and the input voltage. When the control module receives the detection signal, the control module transmits the detection signal to the input pin. When the control module receives the detection signal of the output pin return, the control module provides an input voltage to the power chip according to the return detection signal.

In order to achieve the above object, yet another aspect of the present invention relates to a test method. This test method is used to test the coupling state of the connection module of the display device and the cable group. The test method includes connecting a cable group and a connection module; providing a detection signal to the control module, the control module is coupled to the cable group; transmitting the detection signal to the connection module through the cable group; and when the control module transmits When the cable group receives the detection signal returned by the connection module to become an enable signal, the control module provides an input voltage to the power chip according to the enable signal.

Therefore, according to the technical content of the present invention, an embodiment of the present invention provides a display device and a test method, thereby improving the function of the display device, because the cable is not properly coupled between the connection board (for example, the cable line). The voltage caused by the oblique insertion of the pin of the connecting plate is supplied to the wrong pin, causing damage to the product.

The basic spirit and other objects of the present invention, as well as the technical means and implementations of the present invention, will be readily apparent to those skilled in the art of the invention.

100‧‧‧ display device

110‧‧‧ display panel

120‧‧‧Connecting module

122‧‧‧First connection module

124‧‧‧Second connection module

130‧‧‧ cable group

132‧‧‧first line

134‧‧‧second line

140‧‧‧Control Module

141‧‧‧ input

142‧‧‧Enable circuit

143‧‧‧Power chip

144‧‧‧First detection circuit

145‧‧‧Detection module

146‧‧‧Second detection circuit

148‧‧‧Protection circuit

The above and other objects, features, advantages and embodiments of the present invention will become more <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt;

2A is a detailed circuit diagram of a connection module and a cable group as shown in FIG. 1 according to an embodiment of the invention.

FIG. 2B is a schematic circuit diagram showing a connection module and a cable group as shown in FIG. 1 according to another embodiment of the present invention.

FIG. 3 is a detailed circuit diagram of an enabling circuit as shown in FIG. 1 according to an embodiment of the invention.

FIG. 4 is a detailed circuit diagram of a detecting circuit as shown in FIG. 1 according to an embodiment of the invention.

FIG. 5 is a detailed circuit diagram of a detecting circuit as shown in FIG. 1 according to an embodiment of the invention.

Figure 6 is a detailed circuit diagram of a protection circuit as shown in Figure 1 in accordance with an embodiment of the present invention.

According to the usual way of operation, the various features and components in the figure are not drawn to scale. The manner in which it is drawn is to present the specific features and elements associated with the present invention in the best manner. In addition, similar elements/components are referred to by the same or similar element symbols throughout the different drawings.

The description of the embodiments of the present invention is intended to be illustrative and not restrictive. The features of various specific embodiments, as well as the method steps and sequences thereof, are constructed and manipulated in the embodiments. However, other specific embodiments may be utilized to achieve the same or equivalent function and sequence of steps.

The scientific and technical terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the invention pertains, unless otherwise defined herein. In addition, the singular noun used in this specification covers the plural of the noun in the case of no conflict with the context; the plural noun of the noun is also included in the plural noun used.

In addition, the term "coupled" as used herein may mean that two or more elements are in direct physical or electrical contact with each other, or indirectly in physical or electrical contact with each other, or that two or more elements are interoperable. Or action.

FIG. 1 is a schematic view showing a display device according to an embodiment of the invention. As shown, the display device 100 includes a display panel 110, a connection module 120, a cable set 130, and a control module 140. The control module 140 is configured to test the coupling state of the connection module 120 and the cable group 130. The control module 140 is coupled to the connection module 120 through the cable set 130. The control module 140 is configured to receive the Detect The signal DE is measured with the input voltage Vin. If the control module 140 receives the detection signal DE, and transmits the detection signal DE to the connection module 120 through the cable group 130, and the control module 140 receives the detection of the connection module 120 through the cable group 130. The signal DE indicates that the connection between the connection module 120 and the cable group 130 is normal. For example, there is no pin insertion or misalignment between the connection module 120 and the cable group 130. . At this time, the control module 140 generates the enable signal EN according to the returned detection signal DE, and supplies the input voltage Vin to the power source chip 143 according to the enable signal EN. In an embodiment, the power supply chip 143 is configured to supply power to internal components of the display device 100 to perform subsequent testing procedures.

As a result, the mechanism of the display device 100 of the embodiment of the present invention can determine whether the coupling state of the connection module 120 and the cable assembly 130 is normal, and if the connection between the connection module 120 and the cable assembly 130 is normal. Follow up. Therefore, when the function of the display device is tested, the voltage is supplied to the wrong pin due to the abnormal coupling between the cable and the connecting board (for example, the cable is obliquely inserted or misplaced). Product damage problem.

In an embodiment, the control module 140 includes an input terminal 141 and an enable circuit 142. The enable circuit 142 is coupled to the power supply chip 143 and configured to receive the input voltage Vin from the input terminal 141. After receiving the input voltage Vin, the enable circuit 142 does not immediately supply the input voltage Vin to the power supply chip 143 until the enable circuit 142 receives the enable signal EN, and the enable circuit 142 supplies the input voltage Vin to the power supply chip 143.

In the embodiment, the control module 140 further includes a detection module 145 for receiving, transmitting, and outputting the enable signal EN according to the detection signal DE returned by the connection module 120. In another embodiment, the control module The 140 further includes a protection circuit 148 for receiving the detection signal DE and the protection signal EP, and outputting the enable signal EN according to the protection signal EP. When the protection circuit 148 receives the detection signal DE, the protection circuit 148 is configured to transmit the detection signal DE to the connection module 120 and stop outputting the enable signal EN. It should be noted that, if the control module 140 receives the protection signal EP, the control module 140 can perform the single test of the control module 140 according to the protection signal EP, but if the control module 140 receives the detection signal DE The control module 148 stops the output enable signal EN to the enable circuit 142, and the control module 140 resumes the enable circuit 142 according to the detection. The enable signal EN generated by the test module 145 provides a mechanism for the input voltage Vin to the power supply chip 143.

2A is a detailed circuit diagram of a connection module and a cable group as shown in FIG. 1 according to an embodiment of the invention. As shown in the figure, the connection module 120 includes a plurality of pins Pin11~Pin1N, and the pin Pin11 and the pin Pin1N are respectively disposed on opposite sides (such as the left side and the right side) of the connection module 120, but are not limited, and the positions are not limited. The pin 11 can be, but is not limited to, directly electrically coupled to the pin Pin1N. In contrast, the cable group 130 includes a plurality of pins Pin21~Pin2N, and the pin Pin21 and the pin Pin2N are respectively disposed on opposite sides (such as the left side and the right side) of the cable group 130, but are not limited. If the control module 140 receives the detection signal DE, the control module 140 transmits the detection signal DE to the pin Pin11 of the connection module 120 through the pin Pin 21 of the cable group 130. If the control module 140 receives the detection signal DE returned by the pin Pin1N of the connection module 120 through the pin Pin2N of the cable set 130, it indicates that the connection between the connection module 120 and the cable set 130 is normal, for example, There is no oblique insertion between the connection module 120 and the pin position of the cable group 130. Therefore, the pin Pin11 of the connection module 120 can receive the detection signal DE transmitted from the pin Pin21 of the cable group 130, and is electrically coupled to the pin Pin1N based on the pin Pin11 of the connection module 120. The state is such that the detection signal DE is transmitted from the pin Pin11 of the connection module 120 to the pin Pin1N. Accordingly, the control module 140 can receive the pin Pin1N of the connection module 120 through the pin Pin2N of the cable set 130. The detected signal DE. At this time, the control module 140 generates the enable signal EN according to the detection signal DE, and supplies the input voltage Vin to the power source chip 143 according to the enable signal EN.

FIG. 2B is a schematic circuit diagram showing a connection module and a cable group as shown in FIG. 1 according to another embodiment of the present invention. As shown in the figure, in the embodiment, the connection module 120 can include a first connection module 122 and a second connection module 124. The first connection module 122 is coupled to the display panel 110, and the first connection module 122 includes a plurality of pins Pin11~Pin1N, and the pin Pin11 and the pin Pin1N are respectively disposed on opposite sides of the first connection module 122. In addition, the pin position Pin11 of the first connection module 122 can be, but is not limited to, directly connected to the pin position Pin1N of the first connection module 122. Furthermore, the second connection module 124 is coupled to the display panel 110, and the second connection module 124 includes a plurality of pins Pin31~Pin3N, and the pin Pin31 and the pin Pin3N are respectively disposed on the second connection module 124. The two sides of the second connection module 124 can be, but are not limited to, the pin position Pin3N of the second connection module 124.

In an embodiment, the cable set 130 includes a first row of wires 132 and a second row of wires 134. The first row of lines 132 includes a plurality of pins Pin21~Pin2N, and the pin positions Pin21 and Pin2N2 are respectively disposed on the first row 132. The side (such as the left side and the right side), but not limited, and the pin 21 of the first row 132 can be coupled to the pin Pin11 of the first connection module 122, and the pin Pin2N of the first row 132 can be used. The pin Pin1N is coupled to the first connection module 122. Furthermore, the second row 134 includes a plurality of pins Pin41~Pin4N, and the pin Pin41 and the pin Pin4N are respectively disposed on opposite sides of the second row 134, but are not limited, and the pin of the second row 134 The pin 41 can be coupled to the pin Pin 31 of the second connection module 124, and the pin Pin 4N of the second cable 134 can be coupled to the pin Pin3N of the second connection module 124.

If the control module 140 receives the detection signal DE, the control module 140 transmits the detection signal DE to the pin Pin11 of the first connection module 122 through the pin Pin 21 of the first cable 132. If the control module 140 receives the detection signal DE returned by the pin Pin1N of the first connection module 122 through the pin 2P1 of the first cable 132, the first connection module 122 and the first cable 132 are The coupling state is normal. For example, the first connection module 122 and the first cable 132 are not obliquely inserted or misaligned. Therefore, the pin 11 of the first connection module 122 can receive the first cable. The detection signal DE transmitted from the Pin 21 of the pin 132 is electrically coupled to the pin Pin1N based on the pin Pin11 of the first connection module 122, so that the detection signal DE is from the foot of the first connection module 122. The pin 11 is transmitted to the pin Pin1N, and the control module 140 can receive the detection signal DE returned by the pin Pin1N of the first connection module 122 through the pin Pin2N of the first cable 132. The module 140 continues to transmit the detection signal DE to the pin Pin31 of the second connection module 124 through the pin Pin41 of the second cable 134. If the control module 140 receives the detection signal DE returned by the pin Pin3N of the second connection module 124 through the pin Pin 4N of the second cable 134, The coupling between the two connection modules 124 and the second cable 134 is normal. For example, there is no oblique insertion or misalignment between the second connection module 124 and the second cable 134. Therefore, the second connection module The Pin 31 of the 124 pin can receive the detection signal DE transmitted from the pin Pin41 of the second cable 134, and is electrically coupled to the pin Pin3N based on the pin Pin 31 of the second connection module 124. The signal DE is transmitted from the pin Pin31 of the second connection module 124 to the pin Pin3N. Accordingly, the control module 140 can receive the pin Pin3N of the second connection module 124 through the Pin 4N of the second cable 134. The detection signal DE is returned. At this time, the control module 140 generates the enable signal EN according to the detection signal DE, and supplies the input voltage Vin to the power source chip 143 according to the enable signal EN.

3 is a detailed circuit diagram of an enable circuit 142 as shown in FIG. 1 in accordance with an embodiment of the present invention. As shown, the enable circuit 142 includes a switch T1 and a control unit T2. The first end S of the switch T1 is configured to receive the input voltage Vin and is coupled to a resistor-capacitor (RC) circuit. The second end D of the switch T1 is coupled to the power source chip 143. The control unit T2 is coupled to the control terminal G of the switch T1. The control unit T2 turns on the switch T1 according to the enable signal EN, and causes the switch T1 to supply the output voltage Vout to the power supply chip 143 according to the input voltage Vin. In addition, the first terminal D of the control unit T2 is coupled to the control terminal G of the switch T1, and the control terminal G of the control unit T2 is configured to receive the enable signal EN. The second terminal S of the control unit T2 is grounded through the resistor R.

In one embodiment, the detection module 145 shown in FIG. 1 includes a first detection circuit 144 and a second detection circuit 146, which are respectively shown in FIGS. 4 and 5 and are described later. FIG. 4 is a detailed circuit diagram of a detecting circuit as shown in FIG. 1 according to an embodiment of the invention. As shown, the first detection power The path 144 is configured to receive and output the enable signal EN according to the detection signal DE returned by the pin Pin3N of the second connection module 124 (see FIG. 2B). In an embodiment, the first detection circuit 144 includes a switch T1 and a control unit T2. The first end S of the switch T1 is configured to receive the detection signal DE, and the second end D of the switch T1 is coupled to the enable circuit 142. The control unit T2 is coupled to the control terminal G of the switch T1, and the control unit T2 turns on the switch T1 according to the detection signal DE returned by the pin Pin3N of the second connection module 124 (see FIG. 2B). T1 outputs the detection signal DE as the enable signal EN. In addition, the first terminal D of the control unit T2 is coupled to the control terminal G of the switch T1, and the control terminal G of the control unit T2 is configured to receive the detection signal DE and is coupled to a resistor-capacitor (RC) circuit, and the control unit The second end S of T2 is grounded through a resistor R.

FIG. 5 is a detailed circuit diagram of a detecting circuit as shown in FIG. 1 according to an embodiment of the invention. As shown in the figure, the second detecting circuit 146 is configured to receive the detection signal DE returned by the pin Pin1N of the first connection module 122 (see FIG. 2B), and transmit the detection signal DE to the second connection mode. Group 124 pin Pin31 (see Figure 2B). In an embodiment, the second detection circuit 146 includes a switch T1 and a control unit T2. The first end S of the switch T1 is configured to receive the detection signal DE returned by the pin Pin1N of the first connection module 122 (see FIG. 2B), and the second end D of the switch T1 is coupled to the second connection module. Pin 123 is Pin31 (see Figure 2B). The control unit T2 is coupled to the control terminal G of the switch T1, and the control unit T2 turns on the switch T1 according to the detection signal DE returned by the pin Pin1N of the first connection module 122 (see FIG. 2B). The T1 outputs the detection signal DE to the pin Pin31 of the second connection module 124 (see FIG. 2B). In addition, the first end D of the control unit T2 is coupled to the control terminal G of the switch T1, The control terminal G of the control unit T2 is configured to receive the detection signal DE and is coupled to a resistor-capacitor (RC) circuit. The second terminal S of the control unit T2 is grounded through the resistor R.

FIG. 6 is a detailed circuit diagram of a protection circuit as shown in FIG. 1 according to an embodiment of the invention. As shown, the protection circuit 148 includes a switch T1 and a control unit T2. The first end S of the switch T1 is used to receive the protection signal EP, and the second end D of the switch T1 is coupled to the enabling circuit 142. The control unit T2 is coupled to the control terminal G of the switch T1, and the control unit T2 turns on the switch T1 according to the protection signal EP, so that the switch T1 outputs the protection signal EP to become the enable signal EN. If the control terminal G of the switch T1 receives the detection signal DE, the switch T1 is turned off according to the detection signal DE to stop the output enable signal EN. In addition, the first end D of the control unit T2 is coupled to the control terminal G of the switch T1, and the control terminal G of the control unit T2 is configured to receive the protection signal EP. The second end S of the control unit T2 is grounded through the resistor R.

In an embodiment, the embodiment of the present invention provides a test method for testing a coupling state of a connection module and a cable group of a display device. The test method includes: connecting a cable group and a connection module; a detection signal is sent to the control module; the detection signal is transmitted to the connection module through the cable group; and when the control module receives the detection signal returned by the connection module through the cable group to become an enable signal, then control The module provides an input voltage to the power supply chip based on the enable signal.

In order to make the test method easy to understand, please refer to Figure 1 and Figure 2A together. First, the cable group 130 and the connection module 120; provide a detection signal DE to the control module; the control module 140 transmits the detection signal DE to the pin 201 of the connection module 120 through the cable group 130 (please See Figure 2A); and when controlling The module 140 receives the detection signal DE returned by the pin 2011 of the connection module 120 (see FIG. 2A) through the cable set 130 to become the enable signal EN, and the control module 140 provides the enable signal according to the enable signal EN. The input voltage Vin is supplied to the power source wafer 143.

In another embodiment, please refer to FIG. 1 together. The test method further includes: after receiving the input voltage Vin, the control module 140 does not immediately provide the input voltage Vin to the power supply chip 143 until the control module 140 receives the same. After the enable signal EN, the enable circuit 142 provides an input voltage Vin to the power supply chip 143.

In another embodiment, referring to FIG. 2B , the connection module 120 includes a first connection module 122 and a second connection module 124 . The first connection module 122 includes a plurality of pins Pin11~Pin1N, and the pin Pin11 and the pin Pin1N are respectively disposed on opposite sides of the first connection module 122, but are not limited, and the pin of the first connection module 122 The pin 11 can be directly and electrically coupled to the pin Pin1N of the first connection module 122. The second connection module 124 includes a plurality of pins Pin31~Pin3N, and the pin Pin31 and the pin Pin3N are respectively disposed on opposite sides of the second connection module 124, but are not limited, and the pin of the second connection module 124 The pin 31 can be directly and electrically coupled to the pin Pin3N of the second connection module 124. The test method includes: when the control module 140 receives the detection signal DE, the control module 140 transmits the detection signal DE to the pin Pin11 of the first connection module 122 through the first cable 132, and the control module After receiving the detection signal DE returned by the pin Pin1N of the first connection module 122, the control module 140 transmits the detection signal DE to the second connection mode through the second cable 134. When the control module 140 receives the detection signal DE returned by the pin Pin3N of the second connection module 124 as the enable signal EN, the control module 140 transmits the detection signal DE as the enable signal EN through the second cable 134. Enable signal EN to provide The input voltage Vin is supplied to the power source wafer 143.

It will be apparent from the above-described embodiments of the present invention that the application of the present invention has the following advantages. The embodiment of the present invention provides a display device testing method, so as to improve the function of the display device, the cable is not properly coupled between the cable and the connection module (for example, the cable is inserted obliquely with the connector module). The resulting voltage is supplied to the wrong pin, causing damage to the product.

Although the embodiments of the present invention are disclosed in the above embodiments, the present invention is not intended to limit the invention, and the present invention may be practiced without departing from the spirit and scope of the invention. Various changes and modifications may be made thereto, and the scope of the invention is defined by the scope of the appended claims.

100‧‧‧ display device

110‧‧‧ display panel

120‧‧‧Connecting module

122‧‧‧First connecting plate

124‧‧‧Second connection plate

130‧‧‧ cable group

132‧‧‧first line

134‧‧‧second line

140‧‧‧Control panel

141‧‧‧ input

142‧‧‧Enable circuit

143‧‧‧Power chip

144‧‧‧First detection circuit

145‧‧‧Detection module

146‧‧‧Second detection circuit

148‧‧‧Protection circuit

Claims (14)

A display device includes: a display panel; at least one connection module coupled to the display panel, wherein the connection module includes a plurality of pins, the pins comprising an input pin and an output pin, and The input pin is electrically coupled to the output pin; and a control module is configured to receive a detection signal and an input voltage, wherein when the control module receives the detection signal, the control module The detection signal is transmitted to the input pin, and when the control module receives the detection signal returned by the output pin, the control module provides the input according to the back detection signal. The voltage is applied to a power supply chip. The display device of claim 1, further comprising at least one row of wire sets for coupling between the at least one connection module and the control module. The display device of claim 2, wherein the control module comprises: a matching circuit for receiving the input voltage, wherein the enabling circuit is configured to provide the input voltage to the power supply chip according to the uniform energy signal. The display device of claim 3, wherein the enabling circuit comprises: a switch having a first end for receiving the input voltage and a second end coupled to the power supply chip; A control unit is coupled to the switch, wherein the control unit turns on the switch according to the enable signal, and causes the switch to provide the output voltage to the power supply chip according to the input voltage. The display device of claim 3, wherein the control module further comprises: a first detecting circuit, configured to receive and output the detection signal according to the output pin of the connection module to output the The detection signal becomes the enable signal. The display device of claim 5, wherein the first detecting circuit comprises: a switch, the first end is configured to receive the detecting signal, the second end is coupled to the enabling circuit; and a control unit And being coupled to the switch, wherein the control unit turns on the switch according to the detection signal returned by the output pin, so that the switch outputs the detection signal to become the enable signal. The display device of claim 5, wherein the at least one connection module comprises: a first connection module coupled to the display panel, having the input pin and the output pin; and a second connection mode The second connection board includes a plurality of pins, the second bit includes a second input pin and a second output pin, and the second input pin is electrically connected. The second output pin is coupled to the second output pin. The display device of claim 7, wherein the control module further comprises: a protection circuit for receiving the detection signal and a protection signal, and outputting the enable signal according to the protection signal, wherein the protection After receiving the detection signal, the protection circuit is configured to transmit the detection signal to the second input pin and stop outputting the enable signal. The display device of claim 8, wherein the protection circuit comprises: a switch having a first end for receiving the protection signal, a second end coupled to the enabling circuit; and a control unit coupled to the The switch, wherein the control unit turns on the switch according to the protection signal, and causes the switch to output the protection signal to become the enable signal, wherein if the switch receives the detection signal, the switch is based on the detection The signal is turned off. The display device of claim 8, wherein the control module further comprises: a second detecting circuit, configured to receive the detection signal returned by the output pin of the first connection module, and transmit the detection signal Detecting a signal to the second input pin of the second connection module. The display device of claim 10, wherein the second The detection circuit includes: a switch, the first end is configured to receive the detection signal returned by the output pin of the first connection module, and the second end is coupled to the second connection module a second input pin; and a control unit coupled to the switch, wherein the control unit turns on the switch according to the detection signal returned by the output pin of the first connection module, so that the switch outputs the switch Detecting a signal to the second input pin of the second connection module. The display device of claim 7, wherein the at least one row of lines comprises: a first row of lines, comprising a plurality of pins, the pins comprising a first input pin and a first output pin. The first input pin of the first cable is coupled to the input pin of the first connection module, and the first output pin of the first cable is coupled to the first pin The output pin of a connection module; and a second line comprising a plurality of pins, the pins comprising a second input pin and a second output pin, wherein the second cable The second input pin is coupled to the second input pin of the second connection module, and the second output pin of the second cable is coupled to the second connection module. The second output pin. A test device for testing a coupling condition of a connection module of a display device and a row of wire sets, wherein the test method comprises: connecting the cable group and the connection module; Providing a detection signal to a control module, the control module is coupled to the cable set; the detection signal is transmitted to the connection module through the cable set; and when the control module transmits the cable set Receiving the detection signal returned by the connection module to become a consistent energy signal, the control module provides an input voltage to a power supply chip according to the enable signal. The test method of the display device of claim 13, wherein the control module, after receiving the input voltage, provides the input voltage to the power supply chip according to the enable signal.