Source: https://patents.google.com/patent/US20010009509A1/en
Timestamp: 2020-02-18 08:10:34
Document Index: 62145981

Matched Legal Cases: ['art 50', 'art 50', 'art 21', 'art 21', 'art 21', 'art 21', 'art 50', 'art 50', 'art 21', 'art 21', 'art 21', 'art 21', 'art 50', 'art 21']

US20010009509A1 - Foldable case having back light - Google Patents
Foldable case having back light Download PDF
US20010009509A1
US20010009509A1 US09/754,357 US75435701A US2001009509A1 US 20010009509 A1 US20010009509 A1 US 20010009509A1 US 75435701 A US75435701 A US 75435701A US 2001009509 A1 US2001009509 A1 US 2001009509A1
foldable case
emitting part
US09/754,357
US6494593B2 (en
Myung Sup An
Jin Kwan Choi
2000-01-07 Priority to KR718/2000 priority Critical
2000-01-07 Priority to KR00-718 priority
2000-01-07 Priority to KR1020000000718A priority patent/KR100339476B1/en
2001-01-05 Application filed by LG Electronics Inc filed Critical LG Electronics Inc
2001-01-05 Assigned to LG ELECTRONICS INC. reassignment LG ELECTRONICS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AN, MYUNG SUP, CHOI, JIN KWAN
2001-07-26 Publication of US20010009509A1 publication Critical patent/US20010009509A1/en
2002-12-17 Publication of US6494593B2 publication Critical patent/US6494593B2/en
2021-01-05 Anticipated expiration legal-status Critical
239000004973 liquid crystal related substances Substances 0 abstract claims description 45
238000002834 transmittance Methods 0 claims description 15
239000011799 hole materials Substances 0 claims description 13
230000000903 blocking Effects 0 claims description 4
230000002633 protecting Effects 0 claims description 4
241001415961 Gaviidae Species 0 abstract 1
G02F2001/133374—Constructional arrangements; Manufacturing methods for displaying permanent signs or marks
A foldable case having a back light is disclosed that a specific printed or injection-molded mark and a logo are emitted on a foldable case with which a liquid crystal display unit is integrally formed. The ON/OFF state of a power source of a liquid crystal display unit can be easily recognized even in a state that a foldable case is closed, and a specific mark or logo printed or injection-molded on an outer surface of the foldable case integrally formed with the liquid crystal display has a back light, so that divers desires of users can be satisfied as well as providing an elegant appearance.
The present invention relates to a foldable case, and more particularly to a foldable case having a back light that a specific printed or injection-molded mark and a logo are emitted on a foldable case with which a liquid crystal display unit is integrally formed. [0002]
Recently, various electronics products having a liquid crystal display unit are being compact to be portable. For example, a cellular phone or a lap-top computer is manufactured to come out in a market in a manner that a liquid crystal display unit, such as an LCD, is integrally formed at a foldable case which is rotatably opened and closed with a main body, facilitating using and carrying. [0004]
As a foldable electronic product having a liquid crystal display unit, the lap-top computer is taken for an embodiment of the present invention and will now be described with reference to the accompanying drawings. [0005]
FIG. 1 shows a construction of a general lap-top computer in accordance with a conventional art. [0006]
As shown in the drawing, the general lap-top computer includes a foldable case [0007] 10 with which a liquid crystal display unit 30 implemented as an LCD is integrally formed, and a main body part 50 hinged with the foldable case 10. The main body part 50 includes a power source button 40 and a key board 60 formed at one side thereof.
As shown in FIG. 2, the LCD implementing the liquid crystal display unit [0008] 30 includes a light emitting part 21 forming a predetermined empty space in contact with a front inner surface of the case 20, from viewing that the outer side of the foldable case 10 is regarded as a back side surface, forming an empty space; a liquid crystal element 22 formed on the light emitting part 21 for selectively blocking the light emitted from the light emitting part by an applied electric signal to display a text or an image; and a transparent protective plate 23 formed in contact with the whole side surface of the liquid crystal element 22, for protecting the liquid crystal element 22.
The front inner surface of the case [0009] 20 contacting the light emitting part 21 which forms an empty space serves as a reflector so that the light generated from a light source of the light emitting part 21 is collectively projected on a display surface of the liquid crystal display unit 30 after passing the liquid crystal element 22 and the transparent protective plate 23.
The power source button [0010] 40 formed at the main body part 50 is functioned as a main power source of the lap-top computer, to simultaneously turn on or turn off the power source of the system and the display unit 30. In case where a user intends to finish using of the lap-top computer, typically, he or she switches off the power source button 40 and rotatably combines the foldable case 10 to the main body part 50 for keeping or carrying.
However, as for the conventional lap-top computer, in case where the user inadvertently rotates the foldable case to the main body part in a state that the power source button is not switched to the OFF terminal, a problem arises that the user could not recognize whether the power source of the liquid crystal display unit has been turned on or turned off. [0011]
Failure to recognize the ON/OFF state of the liquid crystal display unit consuming much power is a big problem in view of characteristics of the lap-top computer carried with battery mounted. [0012]
Meanwhile, a recent tendency shows that a mark or a logo is attached on the outer surface of the foldable case for a product promotion or a brand image creation. In this respect, however, an attachment of a simple mark or a log does not satisfy the diverse desires of users. [0013]
Therefore, an object of the present invention is to provide a foldable case having a back light by which the ON/OFF state of a power source of a liquid crystal display unit can be easily recognized even in a state that a foldable case is closed, and a specific mark or logo printed or injection-molded on an outer surface of the foldable case integrally formed with the liquid crystal display has a back light, so that divers desires of users can be satisfied as well as providing an elegant appearance. [0014]
To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a foldable case having a back light including: a light emitting part formed having an empty space in contact with a front inner surface of the case and a rear side surface of a liquid crystal element, for evenly distributing light; a liquid crystal element installed at the front surface of the light emitting part, and selectively blocking the light emitted from the light emitting part to display a text or an image; a transparent protective plate formed in contact with the front surface of the liquid crystal element to protect the liquid crystal element; and a case for supportedly combining the light emitting part, the liquid crystal element and the transparent protective plate, reflecting the light of the light emitting part so as to be injected onto the whole surface of the liquid crystal element, and having a light transmittance hole on the section of its body so as to have a back light on a specific mark or logo of the rear surface thereof. [0015]
The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings. [0016]
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. [0017]
In the drawings: [0018]
FIG. 1 is an exemplary view of a general lap-top computer having a liquid crystal display in accordance with a conventional art; [0019]
FIG. 2 is a partial sectional view of a foldable case of the general lap-top computer in accordance with the conventional art; [0020]
FIG. 3 is a partial sectional view of a foldable case of a lap-top computer adopting the foldable case having a back light in accordance with the present invention; [0021]
FIG. 4 is an exemplary view of a mark or a logo applied on an outer surface of the foldable case having a back light in accordance with the present invention; and [0022]
FIG. 5 is a perspective view of a lap-top computer adopting the foldable case having a back light in accordance with the present invention. [0023]
Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. [0024]
FIG. 3 is a partial sectional view of a foldable case of a lap-top computer adopting the foldable case having a back light in accordance with the present invention. [0025]
The same elements as in the conventional art are given the same reference numerals. [0026]
With reference to FIG. 3, the foldable case having a back light of the present invention is constructed as follows. [0027]
First, the liquid crystal display unit [0028] 30 includes a light emitting part 21 forming a predetermined empty space in contact with the front inner side surface of a case 200 and a rear side surface of a liquid crystal element 22; a liquid crystal element 22 formed at the front surface of the light emitting part 21, for selectively blocking the light emitted from the light emitting part 21 by an applied electric signal; and a transparent protective plate 23 formed in contact with the front surface of the liquid crystal element, for protecting the liquid crystal element 22.
The foldable case having a back light of the present invention includes the case [0029] 200 provided to supportedly combine the liquid crystal display unit 30 and elements of the liquid crystal display unit 30.
A plurality of light transmittance holes [0030] 700 are formed at the section of the case 200, so that light emitted from the light emitting part 21 is projected on the front surface, and at the same time, a part of the light passes the light transmittance holes 700 to be projected. Thus, a specific mark or logo attached on the outer surface of the case 200 or integrally injection-molded on the case has a back light.
The light transmittance holes [0031] 700 may remain empty or be filled with a transparent and a translucent material according to an embodiment.
Referring to the specific mark or logo [0032] 800 formed on the outer surface of the case 200, a printed light transmittance sheet is attached on the outer surface of the case 200 according to a silk printing method, one of a printing technique, or a light transmittance sheet with a printed a specific mark or logo 800 is inserted when the case 200 is injection-molded. That is, a specific mark or logo 800 is formed by in-mold method, integrating with the case.
The printed sheet is designed in a manner that its color and quality are differently combined to distinctively express what the design intends to indicate when light is transmitted. [0033]
The operation of the foldable case having a back light of the lap-top computer in accordance with the present invention will now be described. [0034]
First, when the power source button [0035] 40 installed at the main body part 50 of the lap-top computer is switched ‘ON’ and power is supplied to the system and the liquid crystal display unit 30 of the lap-top computer, the power is applied to the light emitting part 21 of the liquid crystal display unit 30, emitting a light of a predetermined brightness.
The emitted light passes the liquid crystal element [0036] 22 and the transparent protective plate 23 and is injected to whole surface of the liquid crystal display unit 30 At this time, a part of the emitted light passes the plurality of light transmittance holes 700 formed on the section of the case 200 and is projected so as for the specific mark and logo attached on the outer surface of the case 200 to have a back light.
Accordingly, if the foldable case [0037] 100 is closed in a state than the power source button 40 is not switched to OFF due to the user's inadvertence, the user can easily recognize the ON/OFF state of the power source of the liquid crystal display unit through the back light from the specific mark and logo printed or injection-molded on the case 200.
As so far described, the foldable case having a back light of the present invention has the following effects: [0038]
First, when the foldable case is closed, the ON/OFF state of the display unit can be easily recognized by the user through the specific mark or logo with back light formed at the outer surface of the foldable case, so that unnecessary power consumption due to the user's inadvertence is prevented in the liquid crystal display unit which is to consume much power in view of the characteristics of the lap-top computer. [0039]
Secondly, as the specific mark or logo with back light formed on the outer surface of the foldable case emits during use of the lap-top computer, the outer appearance of the product looks elegant, satisfying the desires of many consumers. [0040]
Lastly, a lap-top computer adopting the foldable case of the present invention would improve the publicity of the product itself and help heighten the image of the brand. [0041]
As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalence of such meets and bounds are therefore intended to be embraced by the appended claims. [0042]
1. A foldable case having a back light comprising:
a light emitting part formed having an empty space in contact with a front inner surface of the case and a rear side surface of a liquid crystal element, for evenly distributing light;
a liquid crystal element installed at the front surface of the light emitting part, and selectively blocking the light emitted from the light emitting part to display a text or an image;
a transparent protective plate formed in contact with the front surface of the liquid crystal element to protect the liquid crystal element; and
a case for supportedly combining the light emitting part, the liquid crystal element and the transparent protective plate, reflecting the light of the light emitting part so as to be injected onto the whole surface of the liquid crystal element, and having a light transmittance hole on the section of its body so as to have a back light on a specific mark or logo of the rear surface thereof.
2. The foldable case according to
, wherein the specific mark or logo are printed on a light transmittance sheet.
3. The foldable case according to
, wherein the specific mark or logo are printed on a light transmitted sheet so as to be injected in an in-mold method when the case is injected to be fabricated.
4. The foldable case according to
, wherein the light transmittance holes are formed having an empty space therein.
5. The foldable case according to
, wherein the light transmittance holes are formed filled with a transparent material.
6. The foldable case according to
, wherein the light transmittance holes are formed filled with a translucent material.
7. A foldable case having a back light, comprising:
a liquid crystal display unit for displaying a text or an image by light emitted from the light emitting part; and
light transmittance holes formed at the rear surface thereof so as for the light emitted from the light emitting part to be injected to the rear surface.
8. The foldable case according to
, wherein the light transmittance holes form a specific mark or a logo.
9. The foldable case according to
, wherein the light transmittance holes are through holes filled with a transparent or a translucent material.
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Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:AN, MYUNG SUP;CHOI, JIN KWAN;REEL/FRAME:011428/0196