LIGHT CONTROLLED SCREEN

• US 20090295761A1
• Filed: 09/10/2008
• Published: 12/03/2009
• Est. Priority Date: 05/30/2008
• Status: Abandoned Application

• Current Assignee: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Inventors: Liu, Qing-Hua
• Application Number:
  US12/208,089
• Publication Number:
  US 20090295761A1
• Time in Patent Office: Days
• US Class Current: 345/183
• CPC Class Codes: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06F 3/0386 for light pen

Abstract

A screen controlled by light includes a display and a resistor film cover on an outer surface of the display. The resistor film includes two separated transparent conducting layers. A plurality of photoresistors is coupled between the two transparent conducting layers, wherein the resistance value of each photoresistor is capable of varying under different light conditions.

Claims

1. A screen controlled by light, the screen comprising:

a display;

a resistor film covered on an outer surface of the display, the resistor film comprising two separated transparent conducting layers, a plurality of photoresistors coupled between the two transparent conducting layers, the resistance value of each photoresistor capable of varying under different light conditions.

2. The screen of claim 1, wherein a plurality of fine transparent insulating spots are sandwiched between the two transparent conducting layers to separate the two transparent conducting layers from each other.

3. The screen of claim 1, wherein the resistor film comprises a transparent base layer adjacent to the display and a transparent covering layer covered on the transparent base layer, the two transparent conducting layers are painted on adjacent sides of the transparent base layer and the transparent covering layer.

4. The screen of claim 3, wherein each photoresistor has a large resistance value under normal lighting conditions to insulate the two conducting layers, and has a smaller resistance value when light is shone on the photoresistor.

5. The screen of claim 4, wherein the light is one of:

laser, infrared, and ultraviolet light.

6. The screen of claim 1, wherein a controller is coupled to the two transparent conducting layers to detect variance of resistance value of the plurality of photoresistors and responds by triggering associated operations.

7. A combination, comprising:

a screen comprising;

a display;

a resistor film covered on the display, the resistor film comprising a plurality of photoresistors;

a controller electronically connected to the photoresistors, the controller triggering different operations in response to different changes of the resistance value of the photoresistors;

a light emitter emitting light on the screen to induce changes to the resistance values of the photoresistors in different modes to trigger different operations.

8. The combination of claim 7, wherein the resistor film comprises two separated transparent conducting layers, and the plurality of photoresistors is coupled between the two transparent conducting layers.

9. The combination of claim 8, wherein the controller is coupled to the two transparent conducting layers to detect changes in the resistance values of the photoresistors and respond by triggering associated operations.

10. The combination of claim 9, wherein the photoresistor has large resistance value under normal lighting conditions to insulate the two conducting layers, and has a smaller resistance value when light is shone on the photoresistor.

11. The combination of claim 10, wherein the light is one of:

a laser, infrared, or ultraviolet light.

12. The combination of claim 8, wherein a plurality of fine transparent insulating sports is sandwiched between the two transparent conducting layers to separate the two transparent conducting layers from each other.

13. The combination of claim 8, wherein the resistor film comprises a transparent base layer adjacent to the display and a transparent covering layer covered on the transparent base layer, the two transparent conducting layers are painted on adjacent sides of the transparent base layer and the transparent covering layer.