TW305950B - A display device - Google Patents

Abstract

A compact electronic projector has a display assembly, such as a liquid crystal display panel and associated Fresnel lenses, which is mounted inside the projector body so as to rotate between a storage position in which the display assembly is generally parallel with the projection axis of the device, and a deployed position in which the display assembly is disposed at an oblique angle (such as 90 deg) with respect to the projection axis. The assembly can thus be rotated to occupy the voids needed for expansion and contraction of the optical beams when the projector is in use, which voids have no useful function when the projector is not in use, and are thus available for component storage. This feature enables saving of a substantial volume of space, making the closed unit compact and easily transported. A linkage may further be provided to cause a projection lens to extend at least partially outside of the body in the deployed position, and to cause the projection lens to retract back inside the body in the storage position. In one embodiment, the body has doors movable between an open position, when the display assembly is in its deployed position, and a closed position, when the display assembly is in its storage position, and the display assembly extends through the doors in the deployed position. An adjustable rear foot may be used to adjusting the pitch angle of the projection axis.

Description

〇〇A7 B7. Description of the invention (!) K Invention Fan The present invention generally relates to a projection system, in particular to a small (brief case size) projector, in which movable components save space for storage. More particularly It is about projectors with electronically addressable displays such as liquid crystal displays. Technical description Overhead slide projectors and projectors have occupied a lot of space for a long time. This is not because the necessary components are large, but is limited by optical technology. Some unoccupied space is required to accommodate the light column and the ventilation pipe. This large space can be regarded as a problem, or at least inconvenient to use, so considerable work has been planned to manufacture a device with a small storage space feature that can be expanded or opened during actual use. A typical example of the latter is U.S. Patent No. 5,374,969, and its patent application scope is an overhead projector (OHP) with a folded bottom and folded lens arms. The other device is foldable for transmission and storage, and has different support mechanisms. It can be represented by 0HP model 2770 manufactured by Mingzhou Mining Company (3M_trustee of the present invention). Although the support and retraction mechanism is complicated, Easy to operate. US Patent No. 4,588,271 describes another projector, which can be folded for storage but is very strong when used. In recent years, liquid crystal display (LCD.) Panels have been added to the overhead projector of Chuan Zhanruming & 1 Brother Zhu, making the original technology have new uses. These boards are different from the electronic address, that is, the final image sent to the panel is controlled by electronic signals. The hardships can be obtained from the electricity I I I — one I I n order — J ^ (please read the notes on the back before filling out this page) Printed by the Employees Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs

A7 B7 Printed by the Employees ’Consumer Cooperative of the Central Department of Economic Affairs of the Ministry of Economic Affairs. 5. Description of invention (2) Brain, or standard video (NTSC) signal, or from other suitable devices. The initial design purpose of these panels is to enhance the traditional OHP and can be added or removed according to the desired usage mode of the ohP unit. With the convenience of electronically generating and storing display screens, a new type of display device, often called an integrated projector, has emerged. This device can be input from a computer or other signal source and projected on the screen. Modern integrated projectors can project useful images even in high ambient light conditions. Several patents have been developed for this device, and some examples are summarized as follows: US Patent No. 4,943,154 shows a projector with 3 light valves (a special form of addressable liquid crystal display), and a complex light path. To split the white light source into red, green and blue components, use these three light valves as a light valve for a color, and then merge them to project from a single lens. The manufacturing, assembly, and maintenance of this optical system are complex, occupy a lot of space, are heavy, and have potential efficiency issues. Another method of use is to have a single LCD panel, light path, and lens, and place them after the red, green, and blue filters. When each filter moves into the light path, a suitable color image is formed on the LCD. This device is limited because the lCD cannot quickly respond to the changed input signal. A well-planned filter wheel and related girders are also needed, so this method has few uses. The projection system of US Patent No. 5,097,323 uses the transmission mode Lcd, s (one mode for each color) 'and the three-dimensional space light path (indicating that the light handle can be extended in three-dimensional space, rather than the general two-dimensional space). Not only does this save space, but space can be reallocated to produce a smaller footprint. You can also use a two-color LCD, this panel has the data printed on the display surface I I I I. Seed coat-I order-II ξ (please read the precautions on the back before filling this page)

Du Yint Α7 ____ B7 Employee Consumer Cooperation of the Central Bureau of Economic Affairs of the Ministry of Economic Affairs V. Invention Description (3) Arrays of devices (red, green and blue), and properly addressed with liquid crystal arrays installed to store these filters. Although this LCD is slightly complicated to manufacture, it has the advantage of requiring only a single optical system. In addition, the wave device and the control element can be aligned forever, and the weight of the LCD only needs to be slightly larger than that of the monochrome device, so space and weight can be saved. Removal of prisms, filters, mirrors, etc., and their installation can also achieve additional weight savings. U.S. Patent No. 5,321,450 describes a projector embodying these principles. By using mirrors and angled LCDs, low cost can be achieved. When projecting, use a lens with a vertical mounting axis, and the final mirror (foldable) guides the light along a horizontal path. This mirror is the only component that can be moved for storage, and its space-saving function is only secondary. The EzPro 500 projector manufactured by CTX OPTO Company is equipped with a folding lens and mirror unit to achieve storage miniaturization. Among the devices that have been used, miniaturization is regarded as an advantage, including laptop computers and related devices, as represented by US Patent No. 5 483 253. In these types of devices, the hinge of the LCD panel is mounted on the rear edge to fold down to be coplanar with the keyboard to facilitate storage and transmission. However, these devices are usually reflective during operation, sometimes backlit, and sometimes made detachable for use on OHP during manufacture. The most advanced handheld devices are also available. These devices are personal computers, keyboards and LCDs, even smaller than the laptops mentioned above. The palm-top device can be folded for storage and can be put in a pocket. The user thinks that the small device in use and the foldable storage function are the two major advantages. Although there are various methods and distributions in practice, it can reduce the size and increase the space to make the binding ~? -/ <-(please read the notes on the back before filling this page)

Fifth, the invention description (4 A7 B7 Ministry of Economic Affairs Central Standards Bureau employee consumption cooperation Du printing efficiency 'there is still room for improvement, especially because the traditional design does not effectively use the unused space, which is the transmission and reflection system to accommodate the light column Therefore, it is desirable, and it is advantageous, to design a small integrated LCD projector that utilizes this unused space, so it can be used quickly and easily. SUMMARY OF THE INVENTION The present invention provides a small electronic projector, which It generally includes a body, a light source, located in the body, a projection mirror, located in the body with a line between the light source and the projection mirror to define a projection axis, a display assembly, with a device to generate an image, the display assembly Located inside the body and placed between the light source and the projection mirror, and the device to rotate the display assembly from a storage position, where the display assembly is approximately parallel to the projection axis to a use position, where the display assembly system is at an oblique angle relative to The projection is arranged. The display assembly can be in the form of a transmissive liquid crystal display panel, or it can display The device of the assembly is designed to extend the projection mirror at least partially outside the body in the use position, and to retract the projection mirror in the storage position in the storage position. In a specific example, the body has doors that can be opened and closed Move between, open position means when the display assembly is in its use position, and closed position means when the display assembly is in its storage position, and the display assembly extends through the door in the use position. Available — Available Adjust the rear foot to adjust the pitch angle of the projection axis. The display assembly (LCD panel) is configured to rotate around the horizontal axis at the center of the assembly, and then rotate the assembly to occupy the space required for beam expansion and contraction when the LCD is used. These The space is not written when the projector is not in use. The paper size is applicable to the Chinese National Standard (CMS) A4 specification (210X297mm (please read the precautions on the back before filling this page).

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J ^ Du-printed by the consumer cooperation of the Central Bureau of Standards of the Ministry of Economic Affairs A7 _____B7 V. Description of invention (5) '— ~ —- It is used for component storage. This feature can save a lot of space, making the closed unit compact and easy to transmit. Also the simplification of the optical components also produces a light-weight projector, which in turn enhances portability. Due to the reduction in volume, weight, and number of components, lower cost devices can be manufactured without sacrificing performance. The invention provides an electronic addressable projector, which can provide excellent image quality and brightness, and can also be folded or reconfigured to facilitate storage and transmission, so that the shape of the latter is small and easy to transmit. The main benefit gained from this reconfiguration during storage is a reduction in the overall volume of the device, and a reduction in protrusions can reduce damage. It has been found that devices with one-dimensional space (that is, low-profile) as easily as possible during transmission. In this way, a handle can be installed on the device so that it can be carried with one hand. A projector with multiple equilaterals (such as a square) needs to be carried with two hands, otherwise it will cause interference with one hand during transmission. In addition, if the device is planned to have a smoother outline or appearance, when an unexpected strong collision with other objects, the damage will be reduced, and it will not interfere with the movement of people when carrying, so the best and convenient transmission shape 'Briefcase or similar. Brief description of the drawings. The present invention can be better understood with reference to the drawings, in which: FIG. 1 is a perspective view of a specific example of a small integrated LCD projector of the present invention, which shows the storage / transmission status. Fig. 2A is a ticked view of the projector of Fig. 1 'Other display storage / transmission status. '

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Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs. Figure 2B is a cross-sectional view of Figure 2A, but the projector is shown in the state. More use Figure 3 is a top view of the projector after removing the upper surface, which also shows the state of use. Description of Preferred Specific Examples Now referring to the drawings, and in particular to the figures], which shows a specific example 10 of the small electronic projector of the present invention. The external features of the projector 10 or the body 12, two retractable doors M and 16, the upper rear adjustment knob 20, a socket 24 for a power cable, and a power (on / off) switch 26 , And one or more ports to provide various types of electrical connections (such as video and data drives), as shown in 28. In this specific example, the body is box-shaped, and its upper surface (which includes the doors 14 and 16) is flat and roughly flat below it (in the storage position). This shape provides a particularly low profile, but those skilled in the art will understand that other profiles may be provided rather than necessarily rectangular as the projector 10. The body 12 can be made of any strong material, and it is made of a light-weight polymer such as acrylonitrile diethylene styrene (ABS). Or polycarbonate is preferred. 2A and 2B are longitudinal cross-sectional views of the projector 10, showing its storage / transmission status and its usage status, respectively, and showing that the projector 10 additionally includes a light source 30 having an adjacent heat source 32, and a collimator (parabolic reflection) Device) 34 and a condenser 36 opposite to the light source 3G, an infrared filter (hot mirror) 38 ′ close to the condenser 36, a display assembly 40, and a projection mirror 42. All these components are inside the body 12, although in FIG. 2B, when the projector 10 is in use, the display assembly 40 and the projection mirror 42 protrude from the body. The size of the display paper is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 meals) --------, '--Strong clothes ------, 玎 ------ C please Read the precautions on the back first and then fill in {! 'Benwa} A7 B7 V. Description of the invention (Fit 4G is pivotally or rotatably connected to the inside of the body. In this way, when in use, the display 4Q is roughly the same as the light The path is vertical, but it is approximately parallel to this light path when it is stored, and it occupies the space reserved for the light column during operation. With reference to the cross-sectional views of FIGS. 2A and 2B, the term longitudinal is used to illustrate the direction of a projector, which is the same as the projection Axis-consistent, roughly straight between the light source 30 and the projection mirror 42. This term applies to this particular specific example, but it should not be interpreted in a narrow sense. Other specific examples can use folded light paths such as by using Reflective Fresnel light under the mirror, etc., and (because adding these components will increase the cost of the device, sometimes it is not expected for other reasons) this device still has the advantages of the present invention. In particular, as long as the display assembly is moved in Get low wheels when storing location Profile, and where the assembly is approximately parallel to the direction of reflection of the reflected beam in the display assembly area. In addition, another good way is to use time to strike the LCD panel at a substantially right angle, which is not an important requirement because even if it is not the surface 90. Rotate the panel The combination can still be a large amount of named space ', that is, the light hits the panel at an oblique angle instead of an orthogonal angle. By selecting the rotation angle of the display panel, even an extremely important correction function (to correct the shape of the image) can be obtained. There is a body U Stop pins or blocks (not shown) to prevent the display assembly from rotating too fast. Light source 30 is preferably a high-intensity light source such as an EVD (halogen) lamp, or a series of high-output metal halogen lamps (such as 250 watts, 400 watts, 575 watts) ), Such as the Osram brand of the German company Sivannian, or the product of Philips Electronics in the Netherlands. It is connected to the 12-volt DC power supply 44 in the body 12 (refer to FIG. 3). In this specific example, The heat sink 32 is composed of two 10 "(25.4 cm) long aids. 10- This paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) nn I. &Quot; " j · Binding--- --- \ ^ · (please Notes on the back read and re-fill of this page) Ministry of Economic Affairs Bureau of Standards staff of consumer cooperatives and India split

Printed by the Employees Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs -11- belt consisting of 5052 aluminum extrudate. The condenser is preferably flat and convex, and is made of borosilicate such as heat-resistant glass Pyrex (commercial product of Corning Corporation). The IR filter 38 is a traditional thermal mirror, and Baoxilong has such products. The display assembly 40 can take various forms, such as a transmissive LCD panel, a light valve, or a low-light array. In the specific example of the projector 10, the display assembly includes an LCD panel 46, such as a 6_4 " (16.3 cm) panel, and this type of product is available from Ben Schaffer and Regen Steel, and 2 Fresnel The lens 48 is fastened to the housing 52. A fan 55 (refer to FIG. 3) is installed in the housing 52 to cool the panel 46. The entire display assembly is configured to rotate horizontally around the center of the assembly. Then use the #rotation combination to occupy the space required for beam expansion and contraction. These spaces have no effect when the projector is not in use, so it can be used for component storage. . This extra micro can save a lot of space, making the closed unit miniaturized and easy to transmit. The display assembly ❹ must be installed as a rotary type, such as a money lever to move it, but the pivot connection is simpler. In addition to pivoting the display, devices can also be provided to ensure the display is in storage or in use. This device may consist of movable flaps or doors to provide a generally continuous shape when placed in use or storage. As can be seen from the drawings and the fourth, these doors include doors 14. and 16, and the lower doors 54 and 56, which are all pivotally connected to the body 12. When the combination display is rotated for use, the door can be removed to facilitate passage. These doors not only protect the display assembly and provide a more attractive design, but also reduce light leakage. Each door is preferably equipped with a spring so as to indicate that the combined body automatically retracts to the loading position when rotating. The projection mirror 42 can also be connected by a continuous display combination

Wiiii ^ 7cNS) A4 ^ (210X297 ^ —- ITJ, / Ji (please read the precautions on the back before filling out this page) Printed A7 by the Staff Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs ----------- B7 V. Sending date ^ 7 ^ 7-~ ——- = 40, for example, by chaining, in order to configure the projector to be automatically retracted into the projection mirror 42 when it is in the storage state (and when configured to use the state, it can Since the projection 42 extends beyond the body 12). The display assembly 40 itself is preferably biased with a centrifugal spring and a flash engagement spring connected to the button 18. This latch also locks the device in the loading position (ie It locks the doors 14, 16, 54 and 56 'and maintains the projection mirror 42 in the retracted state.) A film or lens cover (not shown) can also be provided to provide additional projector-like protection when retracted. A lever (not shown) can be used to connect to the edge of the body 12 and to the display assembly housing 52 to move all the components to the device position at the same time. FIGS. 2A and 2B also show a rear foot assembly 6, which The rear foot 62 is formed on the retractable door 54 of the bottom 7 so as to form a three-legged shape to balance the device. When the position is shown, the assembly 4 () is supported on the foot 62 to support the body 12 so that the module does not need to lock the open position once the machine slides on the table. The foot assembly 60 includes one fixed to a turbine or wire assembly 64 Yes: the whole button 20 'and a guide that has-fixed on the foot end. When the projector is mounted on the supporting surface, the rear end of the projector 1 () can be adjusted clockwise by twisting the ^ button 20. The angle of the pitch (that is, adjusting the projection height) rises. If the button is turned counterclockwise, the rear end will be lowered. The feature of the foot assembly 60 is that it has the function of quickly releasing the moving guide part and retracting the foot 68 and retracting it. Body 12. The moving guide 66 fits into a cavity or bracket, and the f is formed on or connected to the body 12, but it is not firmly connected. And it is raised (with sufficient tolerances to make it retract from the worm gear. The spring connected to the guide rod 66 automatically retracts it. The friction of the spring actually supports the guide rod against the worm gear 54 to prevent it from retracting under normal conditions, but the user can move the button 2 laterally to cause The guide bar is away from the worm gear 64 'to facilitate the spring Retract it. ______-12- The size of the paper (eNS) A4_ ((Please read the precautions on the back before filling, ί 本 uc loading-

、 1T V. Description of the invention (10) A7 B7 Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs and then refer to FIG. 3 'You can see the other components of the projector 10, these include: the second fan 70' to cool the power supply 44 'The third fan 72 cools the optical module surrounded by the heat sink 32 to cool conduction heat and convection heat, and an additional speaker 74. The extra electronics (LCD control) can be traditional and exceed the body's bright range. In addition to being consistent with the goal of miniaturization, the electronic component is best encapsulated in a smaller sub-assembly. NEO Model MDI-0344 provides a suitable package and includes data and video functions to drive the LCD panel. The projector 10 containing these commercially available components is about 3.4 · quot; χ10.9 " χ16.3 " (8.6 cmx27.7 cmx41_4 cm) 'but it can also be made into a smaller 3 25 " with traditional components χ1〇5 " χ14 75 " (8 3 cmx26.7 cmx37.5 cm) ° The projector 10 has several advantages in addition to miniaturization and easy transmission. The simplification of optical components produces a light-weight projector, which in turn increases portability . Due to the reduction in size and weight of components, lower cost devices can be manufactured without sacrificing performance. The projector is electronically addressable, which provides excellent image quality and brightness. The main benefit gained from this reconfiguration during storage is the reduction in the total volume of the device, and the reduction in protrusions reduces damage. A carrying handle (not shown) can also be installed on the device to facilitate one-handed carrying. Because the device is planned to have a smoother outline or appearance, its damage will be reduced when it accidentally collides with other objects, and it will not interfere with people ’s movements. The “last” automatic use mechanism allows users to quickly set The function it wants to exhibit, thus increasing efficiency. Although the present invention has been described with reference to specific specific examples, this description is not intended to be interpreted in a narrow sense. By referring to the description of the present invention, I am familiar with this Lai Caiguanguan ladder in Jiben County) (Please read the precautions on the back before filling out this page) Binding · Order I * II -I-Γ— · A7 B7 5. DESCRIPTION OF THE INVENTION (11) The surgeon can make various corrections to the disclosed specific examples and make other specific examples of the present invention. It is therefore expected that such amendments will be made without departing from the spirit or scope of the invention defined in the appended patent application. ^ __ I 'Binding B >' (please read the notes on the back before filling out this page) Printed by the Employee Consumer Cooperative of the Central Standard Falcon Bureau of the Ministry of Economic Affairs-14- This paper scale is applicable to the Chinese National Standard (CNS) Α4 specification (210Χ297 Centigrade)

Claims (1)

A8 B8 C8 D8 7. Patent application L ~ display devices, including: a light source; a display assembly with a device to produce an image; a device to guide light from the light source to the display assembly, and define, Beam direction; a positioning projection mirror to receive the image produced by the display assembly; and a device to move the display assembly from a storage position, wherein the display assembly is approximately parallel to the beam direction to a use position, wherein The display assembly is arranged at an oblique angle relative to the beam direction. 2. The display device according to item 1 of the patent application scope, wherein the device for guiding light from the light source to the display assembly includes: a reflector located beside the light source, opposite the display assembly; and A condenser lens is located between the light source and the display assembly. • The display device according to item 1 of the patent application garden, wherein the display assembly includes a liquid crystal display panel. 4. The display device according to item 1 of the patent application scope, wherein the device for moving the display assembly allows the display assembly to rotate between the storage and use positions. 5_ The display device according to item 1 of the patent application scope, wherein the bevel angle is about 90. . 6 'The display device according to item 1 of the Chinese Patent Application Park, where: the child light source, the display assembly, the light-guiding device, and the projection mirror sound are in a common body; and 15 Jiazhuan (CNS) A4 specification (21GX297 public policy) C Please read the precautions on the back # fill in this book \ 0〇-install · order Printed by the Employee Consumer Cooperative of the Central Bureau of Economics of the Ministry of Economic Affairs 8 8 88 ABCD Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy Sixth, the scope of patent application to move the device of the display assembly also causes the projection lens to extend at least partially outside the body at the use position, and to retract the projection lens to the body at the storage position. The display device according to item 1 of the patent application park, wherein: the light source, the display assembly, the light-guiding device, and the projection mirror are located in a common body; the body has doors that can be in an open position Move between and-closed position 'open position means when the display assembly is in its use position, and closed position means when the display assembly is in its storage position; and the display assembly is at The use position extends through the doors. 8. The display device according to the patent application item 1 in which the device for moving the display assembly is also provided to correct the shape of the image. 9. According to the patent application example The display device of item 4 in the garden, wherein the display assembly rotates along its approximate center line. According to the display device of claim 7 in the patent application, the display assembly can support the body when it is in the use position 11. A display device, comprising: a body;-a light source, located in the body;-a projection mirror 'is located in the body, a line between the light source and the projection mirror defines a projection axis;-a display assembly, having The device generates an image, the display assembly is located in the body, and between the light source and the projection mirror; -16-This paper scale is applicable to China National Standard Rate (CNS) 84 specifications (2 丨 0> < 297mm (please read the precautions on the back before filling in this page)-installed, βτ Printed by the Employee Consumer Cooperative of the Central Standards Bureau of the Ministry of Economy ^ u5G50 A8 B8 C8 ------- D8 '-. The patent application device 'rotates the display assembly from a storage position, wherein the display assembly is approximately parallel to the projection axis to a use position, wherein the display. The assembly is arranged at an oblique angle relative to the projection axis. 12. The display device according to item u of the patent application scope, wherein the display assembly includes a transmissive liquid crystal display panel. 13. The display device according to item u of the patent application scope, wherein the device that moves the display assembly, also This causes the projection lens to extend at least partially outside the body in the use position, and to retract the projection lens in the body in the storage position. 14. The display device according to item 丨 丨 of the patent application scope, wherein: the body has doors that can be moved between an open position and a closed position, and the open position means that the display assembly is closed when it is in its use position Position means when the display assembly is in its storage position; and the display assembly extends through the doors in the use position. Take the display device according to item 丨 in the scope of the patent application, and also include the device. When the body supports a supporting surface, the device adjusts the pitch angle of the projection axis. 16. The display device according to item u of patent application Fan Gu, wherein the device for moving the display assembly also provides a device to correct the shape of the image 0 17. The display device according to item 丨 2 of the patent application scope, The display assembly rotates along the approximate center line of the liquid crystal display panel. 18. The display device according to item 13 of the patent application scope, in which: the body has doors that can be moved between an open position and a closed position -17- This paper scale is applicable to China National Standard (CNS) Α4 specification (210Χ297 Ali) ---------— installed I---(please read the precautions on the back before filling in this page) Ίβτ Printed by the Central Standard Falcon Bureau Employee Consumer Cooperative of the Ministry of Economic Affairs A8 B8 C8 ^ _______ D8, Apply for special ~ --- $, open position means when the display assembly is in its use position, and closed σ position means when the display assembly is in its storage position; and the display assembly extends through the in the use position Waiting for the door. 19. The display device according to item 15 of the patent application scope, wherein the display assembly can support the body when it is in its use position ^ 20-a small integrated LCD projector, including: • 'body, with upper and lower roughly Flat and parallel surfaces, each of the upper and lower surfaces has at least one door movable between an open position and a closed position;-a high-intensity light source located in the body; a projection mirror located in the body, the light source and the The line between the projection mirrors' defines a projection axis; the display assembly 'has a device to generate an image, the display assembly is located in the body' and is between the light source and the projection mirror, and includes-electrically pre-addressable A transmissive liquid crystal display; a device that rotates the display assembly from a storage position along its approximate centerline, wherein the display assembly is approximately parallel to the projection axis to a use position, wherein the display assembly is positioned relative to the projection The oblique angle arrangement of the axis' the display assembly extends through the body doors at the use position; the device is connected to the rotating device to cause the projection mirror The use position extends at least partially outside the body, and the projection lens is retracted into the body in the storage position; and a device for adjusting the pitch angle of the projection axis when the body supports a support surface . -18- The size of this paper is applicable to the Chinese National Standard (CNS) A4 specification (210Χ297mm) (please read the precautions on the back before filling in this page) 85.04.10 805950 Application date rirr type ΤΤΓ Μ- (Filled by the Office) Α4 C4 amendment page (February 86) 305950 矣 = difficult patent specification invention name Chinese display device English A DISPLAY DEVICE name 1. Ilster. Meguidi. Logis 2. William. Edward. Good Saudi nationality are all American inventions, inventions, residences and residences. 1. 3M Center, Austin, Texas, United States. 2. Texas, United States. The name of the 3M Center in Sting City (name) Yinjia III, Shuanggong Consumer Cooperative of the Central Department of Economics of the Ministry of Economic Affairs III. Applicant Nationality American Merchant Minnesota Mining and Manufacturing Company US Residence, Residence (Office) Name of Representative United States Terry. K. Kwalie ’s paper ruler sample rate at the 3M Center, St. Paul, Minnesota (⑽) A4 ^ (210x2S7 now)