TWI381348B - Writable display device - Google Patents

Description

Writable display device

The present invention relates to a display device that can be written, and more particularly to an LED display device that can perform writing on an LED display screen.

With the continuous development of display technology, LED display devices have been widely used in the consumer field due to their own characteristics. The LED display device is configured by arranging a plurality of LEDs as display units in a matrix to form a display panel. Due to the characteristics of the LED itself, the LED display device has the advantages of low operating voltage, high luminous brightness, fast response speed, and long life.

The traditional writeable display device mainly relies on a dedicated writing pad or a vocal pen to write, and the written information is input to the computer for processing and then displayed on the LED display device. Therefore, the conventional writeable LED display device cannot work independently of the computer.

In view of this, it is necessary to provide a display device that can directly write on an LED display screen.

A writeable display device will be described below by way of example.

A readable display device includes a transparent upper substrate, a lower substrate and a plurality of touch light emitting display modules disposed on the lower substrate, wherein the plurality of touch light emitting display modules are arranged to form a matrix, and each touch light is illuminated The display module includes a light emitting element and a trigger electrically connected to the light emitting element, and the trigger controls whether the light emitting element emits light.

The writable display device can be directly on the display screen compared to the prior art Writing on the screen causes the display device to display the written image without transmitting the relevant signal to the computer for processing and then displaying on the display device. Therefore, the structure of the writeable display device provided by the embodiment is more For simplicity, writing is more convenient.

The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

Referring to FIG. 1, a display device 100 for writing according to an embodiment of the present invention is provided. The writing display device 100 includes a transparent upper substrate 110 and a lower substrate 120 and a plurality of touch LEDs 130 disposed on the lower substrate 120. The plurality of touch-sensitive light-emitting display modules 130 are arranged to form a matrix, and each of the touch-sensitive light-emitting display modules can be defined as one primitive of the display device 100.

Please refer to FIG. 2, which is a cross-sectional view of the writable display device 100 along the line according to an embodiment of the present invention. Each of the touch light-emitting display modules 130 includes a light-emitting element 131 and a trigger 132 electrically connected to the light-emitting element 131. In the embodiment, the light-emitting element 131 is a light-emitting diode, and the trigger 132 is a controlled rectifier. Preferably, the light emitting diode 131 is disposed on the upper surface of the lower substrate 120, and the flip-flop 132 is disposed on the lower surface of the lower substrate 120, and the light emitting diode 131 is connected to the flip-flop 132 through the wire 133. Concatenation. A plurality of holes 111 for accommodating the LEDs 131 are formed on the transparent upper substrate 110. The hole 111 can be filled with a transparent colloid, and light emitted from the LED 131 can pass through the transparent colloid.

The writeable display device further includes a plurality of trigger electrodes 140 disposed on the transparent upper substrate 110, and the plurality of trigger electrodes 140 respectively The gates of the step-controlled rectifiers 132 in the plurality of touch-sensitive light-emitting display modules 130 are electrically connected. The transparent upper substrate 110 and the lower substrate 120 are respectively provided with a plurality of corresponding upper and lower through holes (not labeled), and the plurality of trigger electrodes 140 are electrically connected to the controlled rectifier 132 respectively through the upper and lower through holes. a gate to control whether the step-controlled rectifier 132 is turned on. The trigger electrode 140 is a transparent electrode.

The writeable display device further includes an inducer 150. The inducer 150 includes a high voltage signal output 151 and a zero voltage signal output 152. Preferably, the inducer 150 can be a brush or a wiper, and a high voltage signal output end 151 and a zero voltage signal output end 152 are respectively disposed at two ends thereof.

Please refer to FIG. 3 , which is a circuit diagram of the complex touch LED display module 130 according to an embodiment of the present invention. The plurality of touch-sensitive light-emitting display modules 130 are juxtaposed to each other and electrically connected to a switching element 160 and a power source 170, respectively. Each of the touch light-emitting display modules 130 forms an electrical circuit with the switching element 160 and the power source 170. And the switching element 160 is a normally closed switch.

When the brush 150 is used for writing on the display device 100, the high voltage signal output end 151 of the brush 150 is in contact with the trigger electrode 140 on the writing track of the brush 150, respectively, and the high voltage signal is input to the corresponding electrode through the trigger electrode 140. The gate of the rectifier 132 is controlled. Since the gate of the corresponding controlled rectifier 132 is input with a high voltage signal, the controlled rectifier 132 is turned on, and the closed rectifier circuit 132, the LED 201, the normally closed switching element 160 and the power source 170 form a closed circuit. Therefore, the light emitting diode 131 starts to emit light to cause the display device 100 to display an image of writing. And, when the high voltage signal output end 151 of the brush 150 is in the process of writing, leave the When the illuminating display module 130 is touched, the thyristor 132 in the touch illuminating display module 130 has been triggered to be in an on state. At this time, the thyristor 132 continues to be in an on state, that is, the illuminating diode 131 Continue to shine. Only when the zero voltage signal output terminal 152 of the brush 150 contacts the trigger electrode 140, and the zero voltage signal is transmitted to the gate of the corresponding step-controlled rectifier 132, the step-controlled rectifier 132 can be stopped, and the corresponding light is emitted. The diode 131 stops emitting light, and the image displayed on the picture element corresponding to the light-emitting diode 131 is wiped off. Preferably, the trigger electrode 140 has a ring structure to increase the contact surface between the trigger electrode 140 and the brush 150, so that the written image is more accurate.

The image written on the display device 100 can be wiped off by opening the switching element 160.

Compared with the prior art, the writable display device 100 provided by the embodiment of the present invention can use the inducer 150 to directly write on the display screen, so that the display device 100 displays the written image without the need to correlate the signal. After being transmitted to the computer for processing, it is displayed on the display device. Therefore, the writeable display device 100 provided by the embodiment is simpler in structure and more convenient in writing.

The display device 100 may further include a memory for storing the written content and transferring it to other display devices for display.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by those skilled in the art in light of the spirit of the invention All should be covered by the following patent application.

100‧‧‧ display device

110‧‧‧Transparent upper substrate

111‧‧‧ hole

120‧‧‧lower substrate

130‧‧‧Touch LED display module

131‧‧‧Lighting elements

132‧‧‧ Trigger

133‧‧‧ wire

140‧‧‧Trigger electrode

150‧‧‧Inducer

151‧‧‧High voltage signal output

160‧‧‧Switching elements

152‧‧‧zero voltage signal output

170‧‧‧Power supply

FIG. 1 is a schematic diagram of a display device capable of writing according to an embodiment of the present invention.

Figure 2 is a cross-sectional view of the writable display device shown in Figure 1 taken along line II-II.

3 is a circuit diagram of the complex touch illumination display module shown in FIG. 1.

100‧‧‧ display device

110‧‧‧Transparent upper substrate

120‧‧‧lower substrate

130‧‧‧Touch LED display module

140‧‧‧Trigger electrode

Claims (9)

A display device capable of writing includes a transparent upper substrate; a lower substrate; a plurality of touch light emitting display modules disposed on the lower substrate, wherein the plurality of touch light emitting display modules are arranged to form a matrix, and each touch light is illuminated The display module includes a light-emitting component and a flip-flop electrically connected to the light-emitting component, wherein the light-emitting component is controlled to emit light through the trigger; and an inducer comprising a high-voltage signal output terminal and a zero voltage At the signal output end, when the high voltage signal output end of the inducer triggers the trigger, the high voltage signal is output to the trigger, the trigger turns on the light emitting element to start to emit light, and after the inducer is disconnected from the trigger, the trigger continues The conductive light-emitting element continues to emit light; when the zero voltage signal output end of the inducer triggers the trigger, the zero voltage signal is output to the flip-flop, the trigger stops turning on the light-emitting element, and the light-emitting element stops emitting light. The writeable display device of claim 1, wherein the trigger is a controlled rectifier. The display device as claimed in claim 2, wherein the writeable display device further comprises a plurality of trigger electrodes respectively disposed on the transparent upper substrate corresponding to the touch light emitting display module, the plurality The trigger electrodes respectively correspond to the gates of the step-controlled rectifiers in the plurality of touch-sensitive LEDs, so that the control voltage applied to the trigger electrodes can be transmitted to the corresponding step-controlled rectifier corresponding to the controlled rectifier control. . The writeable display device of claim 3, wherein the plurality of trigger electrodes are respectively disposed in a ring structure. The writeable display device of claim 3, wherein the plurality of trigger electrodes are transparent electrodes. The writeable display device of claim 3, wherein the inducer is a brush or a wiper. The display device as claimed in claim 3, wherein the display device further includes a switching element and a power source, and the plurality of touch LEDs respectively form an electric power with the switching element and the power source. In the circuit, the switching element is a normally closed switch, and when the switching element is turned off, the image displayed by the entire display device is eliminated. The display device as claimed in claim 3, wherein the transparent upper substrate and the lower substrate are respectively provided with a plurality of corresponding upper and lower through holes, and the plurality of upper and lower through holes are used for the plurality of trigger electrodes. Correspondingly, the gates of the step-controlled rectifiers electrically connected to the plurality of touch-sensitive display modules are respectively connected. The display device according to any one of claims 1 to 8, wherein the light-emitting element is a light-emitting diode.