JP2010272844A - Connector for connecting light sensor to substrate, and method of fabricating light sensor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem of a conventional technology, in relation to a connector for connecting a light sensor. <P>SOLUTION: This connector for connecting a light sensor to a substrate is utilized for rotating the light sensor so that the light-receiving direction of the light sensor is parallel to the substrate. When the connector is utilized in an optical touch system, the light sensor can be disposed on the substrate of the optical touch system by using general manufacturing facilities of flat display panels. Meanwhile, the light-receiving direction of the light sensor is parallel to the substrate of the optical touch system. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

(Refer to related applications)
This application claims the benefit of US Provisional Application No. 61 / 180,890, filed May 25, 2009.

  The present application relates to a connector, and more specifically to a connector for connecting an optical sensor.

  The optical contact system includes a display panel, a transparent substrate, an optical sensor, and a location calculation circuit. Generally, the transparent substrate is a glass substrate. More specifically, the transparent substrate is ITO (tin-doped indium oxide) glass. The display panel displays an image through a transparent substrate. The light sensor is a chip module placed on a transparent substrate, and the light receiving direction of the light sensor detects whether a display object (eg, finger or stylus) is on the transparent substrate and correspondingly light sensitive. In order to generate a signal, it must be parallel to the substrate. The light sensing signal includes information of a sensed image having a range that covers a display object. The light sensing signal information may be the distance and angle between the display object and the light sensor. In addition, the light sensor includes a transmission port for transmitting a light sensing signal to the location calculation circuit. In this way, the location calculation circuit calculates the location of the display object on the display panel according to the light sensing signal.

  In the prior art, when a chip module is placed on a glass substrate, the chip module is first placed on a flexible printed circuit board (FPC) by tape carrier package (TCP) or chip on film (COF), and then In addition, the FPC is bonded to the glass substrate by, for example, pressure welding. However, when the photosensor is placed on the substrate using the method described above, the light receiving direction of the photosensor is limited. More specifically, when the optical sensor is mounted on the FCB by the above-described method, the light receiving direction of the FCB is perpendicular to the substrate as shown in FIG. Thus, when the FCB is coupled to the substrate, the light receiving direction of the photosensor is perpendicular to the substrate. In other words, when the optical sensor is disposed on the glass substrate by a conventional mounting method (TCP or COF), the light receiving direction of the optical sensor is perpendicular to the glass substrate, and the display object contacts the display panel. It is not possible for the optical sensor to detect whether or not In the prior art, the FCB can be bent to rotate the light receiving direction of the photosensor, but such a process is time consuming, the process yield is not easily controlled, and the cost of the optical contact system is reduced. Increase.

  The present invention aims to solve the problems of the prior art.

  The present invention provides a connector for connecting an optical sensor and a substrate. The connector is used to rotate the optical sensor so that the light receiving direction of the optical sensor is parallel to the substrate. The substrate is glass. The light sensor is utilized to receive light so as to generate a light sensing signal. The light sensor has a transmission port for transmitting a light sensing signal. The optical sensor is applied in an optical contact system. The optical contact system has a display panel and a location calculation circuit. The display panel displays an image through the substrate. The location calculation circuit calculates the location of the display object on the display panel according to the light sensing signal. The connector includes a main body and a connection port. The body is utilized to rotate the photosensor to accommodate the photosensor and to change the light receiving direction of the photosensor to be parallel to the substrate. The connection port is accommodated in the main body. The connection port is coupled to the transmission port of the photosensor so that the photosensor is coupled to the substrate through the transmission port and the connection port.

  The present invention further provides an optical contact system. The light contact system includes a substrate, a display panel, a light sensing module, and a location calculation circuit. The substrate is glass. The display panel is used for displaying an image through a substrate. The light sensing module is utilized to receive light to detect a display object and correspondingly generate a light sensing signal. The light sensing module includes a light sensor and a connector. The light sensor is utilized to receive light so as to generate a light sensing signal. The light sensor includes a transmission port for transmitting a light sensing signal. The connector includes a main body, a connection port, and a flexible printed circuit board. The main body accommodates the optical sensor and is used to rotate the optical sensor so as to change the light receiving direction of the optical sensor so as to be parallel to the substrate. The connection port is accommodated in the main body and coupled to the transmission port of the optical sensor. The flexible printed circuit board has a flexible board connection port for coupling the connection port of the connector to the board. The location calculation circuit is used to calculate the location of the display object on the display panel according to the light sensing signal.

  The present invention further provides a method of manufacturing an optical sensor. The optical sensor has a sensing unit and a lens. The sensing unit is utilized to receive light to generate a light sensing signal. The sensing unit has a transmitting end for transmitting a light sensing signal. The lens is utilized to focus the light on the sensing unit. The optical sensor is applied in an optical contact system. The optical contact system includes a substrate, a display panel, and a location calculation circuit. The substrate is glass. The display panel displays an image through the substrate. The location calculation circuit calculates the location of the display object on the display panel according to the light sensing signal. The optical sensor is housed in the connector. The connector rotates the photosensor to change the light receiving direction of the photosensor to be parallel to the substrate, and the connector protects the photosensor from high temperature manufacturing. The method includes filling an underfill between the sensing unit and the support component, mounting a lens on the sensing unit, and mounting the sensing unit and the lens to secure the sensing unit to the support component. Filling the fixed parts around the sensing unit and the lens.

  These and other objects of the present invention will no doubt become apparent to those skilled in the art after reading the following detailed description of the preferred embodiments illustrated in the various figures and drawings.

It is the schematic which shows that the light reception direction of an optical sensor is perpendicular | vertical with respect to a glass substrate. 1 is a schematic diagram illustrating a connector according to a first embodiment of the present invention. It is the schematic which shows the connection port of the connector of this invention. It is the schematic which shows the connection port of the connector of this invention. FIG. 6 is a schematic diagram illustrating a connector according to a second embodiment of the present invention. It is the schematic which shows the 1st embodiment of the optical sensing module of this invention. It is the schematic which shows the 2nd embodiment of the optical sensing module of this invention. It is the schematic which shows the optical contact system of this invention. It is the schematic which shows the method of manufacturing the optical sensor of this invention. It is the schematic which shows the method of manufacturing the optical sensor of this invention.

  The present invention provides a connector for connecting an optical sensor and a substrate. The connector provided by the present invention rotates the photosensor to change the light receiving direction of the photosensor to be parallel to the substrate. Thus, when the optical sensor is disposed on the substrate by the connector of the present invention, the light receiving direction of the optical sensor is parallel to the substrate.

See FIG. FIG. 2 is a schematic diagram illustrating a connector 200 according to a first embodiment of the present invention. In FIG. 2, the connector 200 is disposed on the substrate 202. The substrate 202 is a transparent substrate, for example, a glass substrate or ITO glass. Connector 200 includes a main body 210, a connection port 220, a lid 230, and a light receiving window 240. The main body 210 has a space large enough to accommodate the optical sensor 201, and rotates the optical sensor 201 to change the light receiving direction so as to be parallel to the substrate 202. The connection port 220 is accommodated in the main body 210 and is coupled to the transmission port of the optical sensor 201 so that the optical sensor 201 is coupled to the substrate 2020 through the transmission port of the optical sensor 201 and the connection port 220. As shown in FIGS. 3 and 4, the connection port 220 may be realized by a plurality of L-shaped golden fingers. The connection port 220, the golden finger 221 includes a compartment _{L 1} and _{L 2.} Section L ₁ is coupled to the transmission port of photosensor 201 and is perpendicular to substrate 202. Compartment _{L 2} is coupled to the substrate 202, it is parallel to the substrate. The lid 230 is disposed in the main body 210 in order to prevent the optical sensor 201 from being disconnected from the connector 200 and directly pressed. The light receiving window 240 is used to provide an optical sensor 201 that receives light. Therefore, according to the above description, as long as the connector 200 of the present invention is coupled to the substrate 202 and the optical sensor 201 is disposed in the main body 210 of the connector 200, the light receiving direction of the optical sensor 201 is parallel to the substrate. In some modifications, the optical sensor 201 may transmit the optical sensing signal S _LS through the transmission port of the optical sensor 201 and the connection port 220 of the connector 200.

  See FIG. FIG. 5 is a schematic diagram illustrating a connector 500 according to a second embodiment of the present invention. The operation principle and structure of the connector 500, the optical sensor 501, and the substrate 502 are similar to those of the connector 200, the optical sensor 201, and the substrate 202, respectively. Compared to connector 200, connector 500 further includes a flexible printed circuit board (FPC) 550. The FPC has a flexible plate connection port 551. The flexible plate connection port 551 of the FPC 550 is coupled between the connection port 520 of the connector 500 and the substrate 502. In the general manufacture of a flat display panel, since the display panel drive circuit is coupled to the substrate through the FPC, the manufacture of the connection of the connector 500 to the substrate 502 through the FPC 550 is a common manufacturing facility for flat display panels. Just need.

See FIG. FIG. 6 is a schematic diagram illustrating a first embodiment of the light sensing module of the present invention. The light sensing module 600 includes a light sensor 610 and a connector 620. The optical sensor 610 is accommodated in the connector 620. The operating principle and structure of the optical sensor 610 and the connector 620 are similar to that of the optical sensor 201 and the connector 200, and therefore are not repeated again for the sake of brevity. When the light sensing module 600 is coupled to the substrate 601, the light receiving direction of the light sensing module 600 is parallel to the substrate 601. Thus, when the light sensing module 600 is placed on the substrate of the light contact system, the light sensing module 600 detects a display object on the substrate and generates a light sensing signal S _LS accordingly.

See FIG. FIG. 7 is a schematic diagram illustrating a second embodiment of the light sensing module of the present invention. The light sensing module 700 includes a light sensor 710 and a connector 720. The optical sensor 710 is accommodated in the connector 720. The operating principle and structure of the optical sensor 710 and connector 720 are similar to that of the optical sensor 501 and connector 500 and thus will not repeat again for the sake of brevity. Similarly, when the light sensing module 700 is coupled to the substrate 701, the light receiving direction of the light sensing module 700 is parallel to the substrate 701. As a result, when the light sensing module 700 is placed on the substrate of the light contact system, the light sensing module 700 can detect a display object on the substrate and generate a light sensing signal S _{LS accordingly.} .

See FIG. FIG. 8 is a schematic diagram illustrating an optical contact system 800 of the present invention. The optical contact system 800 includes a substrate 810, a display panel 820, a light sensing module 830, and a location calculation circuit 840. In general, the substrate 810 is a transparent substrate, such as a glass substrate or ITO glass. The display panel 820 displays an image through the substrate 810. The light sensing module 830 may be realized by the light sensing module 600 or 700. The light sensing module 830 is disposed on the substrate 810, and the light receiving direction of the light sensing module 830 is parallel to the substrate 810. The light sensing module 830 receives light to detect a display object O ₁ such as a finger on the substrate 810 and generates a light sensing signal S _LS accordingly. In this manner, the location calculation circuit 840 calculates the location of the display object on the display panel 820 according to the light detection signal S _LS so as to realize the touch control function.

  In addition, it should be noted that in the prior art, since the optical sensor is placed directly on the FPC by TCP or COP, the optical sensor is processed by high temperature manufacturing, eg, reflow. Since the lens of the optical sensor is not heat resistant, the lens must be attached to the optical sensor after high temperature manufacturing, resulting in additional costs. However, using the connector of the present invention, the optical sensor is protected from high temperature manufacturing. As a result, during manufacture of the optical sensor, the lens and other components of the optical sensor are mounted simultaneously to form a chip module, reducing the cost of the optical sensor. The above-described method of manufacturing an optical sensor according to the present invention is further illustrated below.

See Figures 9 and 10. FIGS. 9 and 10 are schematic diagrams illustrating a method of manufacturing an optical sensor 900 of the present invention. The optical sensor 900 includes a sensing unit 910, a lens 920, and a light blocking component 930. The sensing unit 910 is used to receive light so as to generate a light sensing signal _SLS . The sensing unit 910 has a transmission end as a transmission port of the optical sensor 900. The sensing unit 910 is generally a chip scale package (CSP) chip. A lens 920 is utilized to focus the light on the sensing unit 910. The light blocking component 930 is used to block light that does not enter the optical sensor 900 so that the light receiving direction of the optical sensor 900 is perpendicular to the surfaces of the sensing unit 910 and the lens 920. That is, the sensing unit 910 is not disturbed by light in other directions. In addition, when the sensing unit 910 generates a light sensing signal primarily according to mid-infrared light, the light blocking component 930 can block mid-infrared light.

  In FIG. 9, the method of manufacturing the optical sensor 900 includes (1) coupling the transmitting end of the sensing unit 910 to the transport component 901 using surface mounting technology (SMT), and (2) supporting the sensing unit 910 as a supporting component. Filling underfill between sensing unit 910 and support component 901 to secure to 901, (3) mounting with lens 920 on sensing unit 910, (4) attaching sensing unit 910 and lens 920 to each other. Filling the stationary part 902 around the sensing unit 910 and the lens 920 for mounting, and (5) blocking light around the lens 920 to block light that is not normally incident on the surface of the light sensor 900 Including placing part 930.

  In FIG. 10, the method of manufacturing the optical sensor 900 includes (1) coupling the transmitting end of the sensing unit 910 to the support component 901 using SMT, and (2) mounting the lens 920 on the sensing unit 910. (3) using a metal wire to couple the transmitting end of sensing unit 910 to support component 901; (4) around sensing unit 910 and lens 920 to implement sensing unit 910 and lens 920; Filling the stationary component 902 and (5) placing a light blocking component 930 around the lens 920 to block light that is not normally incident on the surface of the optical sensor 900.

  In conclusion, the connector provided by the present invention is used to rotate the photosensor to connect the photosensor and the substrate and to change the light receiving direction of the photosensor to be parallel to the substrate. In this way, the optical sensor can be arranged through the connector of the present invention, and at the same time, the light receiving direction of the optical sensor can be maintained parallel to the substrate. Using the connector of the present invention, the present invention further provides a light sensing module. When the photosensitive module of the present invention is coupled to the substrate, the light receiving direction of the photosensitive module of the present invention is parallel to the substrate. The present invention further provides an optical contact system. In the light contact system, the light sensing module is parallel to the substrate. In addition, the present invention further provides a method of manufacturing an optical sensor using the connector of the present invention. Since the connector of the present invention protects the optical sensor from high temperature manufacturing, the inventive method simultaneously mounts the sensor's sensing unit and lens to form a chip module, reducing the cost of the optical sensor.

  Those skilled in the art will readily observe that numerous variations and alternatives of the apparatus and method may be made while maintaining the teachings of the present invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.

200 connector
201 Light sensor
202 Substrate
210 Body
220 connecting port
221 golden fingers
230 lid
240 light-receiving window
500 connector
501 Light sensor
502 Substrate
520 connecting port
550 flexible printed circuit board
551 flexible printed circuit board
600 light-sensing module
601 Substrate
610 light sensor
620 connector
700 Light Sensing Module 701 Substrate
710 light sensor
720 connector
800 optical touch system
810 Substrate
820 display panel
830 light-sensing module
840 location-calculating circuit
900 Light sensor
901 Carrying component
902 Fixing component
910 Sensing unit
920 lens
930 light-blocking component

Claims (20)

A connector for connecting the optical sensor and the substrate to rotate the optical sensor so that a light receiving direction of the optical sensor is parallel to the substrate;
The substrate is glass, the light sensor is used to receive light to generate a light sensing signal, the light sensor has a transmission port for transmitting the light sensing signal, and The optical sensor is applied to an optical contact system, and the optical contact system includes a display panel and a location calculation circuit, the display panel displays an image through the substrate, and the location calculation circuit includes the light calculation system. Calculate the location of the display object on the display panel according to the sensing signal, and the connector
A body for rotating the photosensor to accommodate the photosensor and to change the light receiving direction of the photosensor to be parallel to the substrate;
A connection port housed in the body coupled to the transmission port of the photosensor for the photosensor coupled to the substrate through the transmission port and the connection port;
connector.   The connector according to claim 1, further comprising a flexible printed circuit board including a flexible board connection port coupled between the connection port of the connector and the substrate.   The connector according to claim 1, wherein the main body is fixed to the substrate by a mounting method, and the mounting method is a tape carrier package (TCP) or a chip on film (COF).   The connector according to claim 1, wherein the main body includes a lid for preventing the optical sensor from being separated and pressed.   The connector according to claim 1, wherein the main body further includes a light receiving window for providing the optical sensor that receives light. The optical sensor is
A sensing unit for receiving light to generate the light sensing signal;
A lens for focusing light on the sensing unit;
The sensing unit includes a transmission end as the transmission port of the photosensor,
The connector according to claim 1.   The connector according to claim 1, wherein the substrate is tin-doped indium oxide (ITO) glass. A light sensor for receiving light to generate a light sensing signal, the light sensor including a transmission port for transmitting the light sensing signal;
A connector according to claim 1 for coupling the light sensor to the substrate, the connector rotating the light sensor to change the light receiving direction of the light sensor to be parallel to the substrate.
Light sensing module.   The optical sensing module according to claim 8, wherein the connector further includes a flexible printed circuit board including a flexible board connection port coupled between the connection port of the connector and the substrate. a) including a substrate that is glass;
b) including a display panel for displaying an image through the substrate;
c) a light sensing module for receiving light to detect a display object and correspondingly generate a light sensing signal, the light sensing module comprising:
i) includes a light sensor for receiving light to generate the light sensing signal, the light sensor including a transmission port for transmitting the light sensing signal;
ii) including a connector, wherein the connector houses the photosensor and a body for rotating the photosensor to change the light receiving direction of the photosensor so as to be parallel to the substrate; A connection port accommodated in the body coupled to the transmission port;
iii) including a flexible printed circuit board having a flexible board connection port for coupling the connection port of the connector to the substrate;
d) including a location calculation circuit for calculating the location of the display object on the display panel according to the light sensing signal;
Light contact system.   The optical contact system according to claim 10, wherein the main body is fixed on the substrate by a mounting method, and the mounting method is a tape carrier package (TCP) or a chip on film (COF).   The optical contact system according to claim 10, wherein the main body further includes a lid for preventing the optical sensor from being separated and pressed.   The optical contact system of claim 10, wherein the body further includes up to light reception to provide the light sensor for receiving light. The optical sensor is
A sensing unit for receiving light to generate the light sensing signal;
A lens for focusing light on the sensing unit;
The sensing unit includes a transmission end as the transmission port of the photosensor,
The optical contact system according to claim 10. The substrate is ITO (tin-doped indium oxide) glass,
The optical contact system according to claim 10. A method of manufacturing a light sensor, wherein the light sensor includes a sensing unit and a lens, the sensing unit being used to receive light to generate a light sensing signal, the sensing unit comprising: , Having a transmitting end for transmitting the light sensing signal, the lens being utilized to focus light on the sensing unit, the light sensor being applied to a light contact system, the light contact The system includes a substrate, a display panel, and a location calculation circuit, wherein the substrate is glass, the display panel displays an image through the substrate, and the location calculation circuit is in accordance with the light sensing signal. The location of the display object on the display panel is calculated, and the photosensor is housed in a connector, and the light receiving direction of the photosensor is such that the connector is parallel to the substrate. And rotating the optical sensor to change, the connector may protect the optical sensor from the high temperature production, the method comprising
Filling an underfill between the sensing unit and the support component to secure the sensing unit to the support component;
Mounting the lens on the sensing unit; and
Filling a fixed part around the sensing unit and the lens to mount the sensing unit and the lens;
Method.   17. The method of claim 16, further comprising placing a light blocking component around the lens to block light that is not normally incident on the surface of the photosensor.   The method of claim 16, further comprising coupling the transmitting end to the support component using surface mount technology.   The method of claim 16, further comprising using a metal wire to couple the transmitting end to the support component.   The method of claim 16, wherein the substrate is ITO glass.

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